There's some stuff I really don't like, here. I'll put it in bold so it's easier to tell what I'm talking about. From their User Agreement:

7 - Code of Conduct.

You agree that your participation in and actions in connection with the Nintendo Creators Program, including use of the Content, will not violate any law, regulation, contract, intellectual property or other third-party right or constitute a criminal action or tort, and that you are solely responsible for your conduct in connection with the Nintendo Creators Program. You further agree not to:

a. Use the Nintendo Creators Program in any manner that could interfere with, disrupt, negatively affect or inhibit other users from fully enjoying the Nintendo Creators Program, or that could damage, disable, overburden or impair the functioning of the Nintendo Creators Program in any manner;

b. Engage in any discriminatory, defamatory, libelous, hateful, harassing, abusive, obscene, threatening, physically dangerous, unlawful, or otherwise objectionable conduct in relation to the Content or the Nintendo Creators Program;

By saying they can terminate your agreement because of anything they find objectionable, wouldn't that mean they can pretty much do it whenever they want, for any reason? And if you make a joke that involves cuss words or crude humor, couldn't that be considered "obscene"? Seems like this stuff would be very limiting and uncomfortable, and the ability for them to say "well, that's objectionable!" and remove your content if you criticize their game or say anything about it they don't like would be very bad as well, especially for reviewers.

c. Attempt to indicate in any manner that we have endorsed you or any products or services for any purpose;

d. Attempt to reverse engineer any aspect of the Content, or do anything that might discover source code or bypass or circumvent measures employed to prevent or limit access to any area, content or code of the Content (except as otherwise expressly permitted by law);

e. Post, upload to, transmit, distribute, store, create or otherwise publish or send through the Nintendo Creators Program any viruses, corrupted data or other harmful, disruptive or destructive files; or

f. Post, upload to, transmit, distribute, store, create or otherwise publish or send through the Nintendo Creators Program: (i) any content that you do not have a legal right to make available, including any unauthorized software, copies of games, music or images; (ii) any content that infringes, dilutes, or otherwise harms the Content or the Nintendo brand and image; (iii) any content that infringes, dilutes, or harms any patent, trademark, trade secret, copyright or other intellectual property or proprietary rights of any party; and, (iv) any unsolicited or unauthorized advertising or promotional materials (e.g. "spam").

g. Disclose or leak confidential, proprietary, or other non-public information obtained in connection with the Nintendo Creators Program.

10 - Termination.

Nintendo may terminate this agreement, or any part of this agreement, at any time, (a) if you are in breach or default of any term of this agreement or program guidelines, or (b) in the event of any change, modification, suspension, termination or unavailability of the services provided by Google Inc., PayPal, Inc., or their affiliates, Nintendo is not required to provide you with any prior notice of such termination in the event of your material breach or serious violation of any term of this agreement or program guidelines, or upon the occurrence of any event described in subsection (b) above. In case of minor breaches by you, Nintendo may provide you with prior notice of your non-compliance and give you an opportunity to remedy such non-compliance.

Nintendo may also terminate this agreement, or any part of this agreement, at any time, for legal, technical or commercial reasons. In this case, we will provide you with notice of such termination, in advance if possible under the circumstances. Nintendo may also suspend, discontinue, or terminate the Nintendo Creators Program without prior notice in the event the Nintendo Creators Program becomes difficult to provide for any reason, including, without limitation, server maintenance or other technical reasons, natural disasters (such as earthquakes, eruptions, floods, typhoons, and/or heavy snow), war, disorder, riot, commotion, labor disputes, administrative measures, fire, or power failure.

In the event this agreement is terminated for any reason, you will no longer have the license to use the Content, and you will no longer be entitled to any advertising revenue generated in connection with your Videos. Upon such termination and upon Nintendo’s request, you must immediately take down any Video and text related thereto. Our failure to insist upon or enforce your strict compliance with this agreement will not constitute a waiver of any of our rights.

So, I'm not sure if "your videos" is referring to Nintendo content or your whole channel, but by not specifying Nintendo videos, it makes me think the whole channel would be affected. I'm not very experienced in YouTube monetization or legal matters, but I would appreciate it if someone more knowledgable than I am could tell me if I'm more-or-less correct, or way off.