is is possible to say that the videos the CCs do are 'paid >So, is is possible to say that the videos the CCs do are 'paid promotion' by WG? Of course, WG doesn't send money to the vid-makers per video (or view), but they do allow the CCs to make money using the WG IP.

technically no since at that point every lets players cover the game they enjoy and make let's plays of it and then gets popular because of their personality to make more videos.the one paying them are not wg but youtube.he is making money using wargame's video but the one giving him the money is youtube and it is accepted as a common practice because of popularity of pewdiepie,mark etc....

basically this means for all intense and purposes he kinda like an employe of youtube whose job is no bring viewers and in return he gets money from advertisers.

sontent creation also comes in different stages.lets plays is more ambiguos if that falls under fair use or not and mostly considered not however because how popular let's players are they are generally accepted as free advirtisement in gaming industry and do no major harm to those industry.

now reviews and critique are the content that are protected by fair use that is the user can make a review and critique of product without permission because it is considered pro consumer and help the consumer to judge the quality of the product they are going to use.basically fair use is meant so that people could not censor critiques and review which can potentitally give accurate measurement of a products quality which can be benificial and positive for the consumer by the ftc guidelines.

since he was criticizing the quality of the tank it falls under fair use and had to be argued at court.

again the example you gave it will be taken on case by case basis where it will be checked when your lisence has expired and try to find out how much money did you make before and after the lisence expiry and you only have to pay for after expiry not before expiry,however if you sell something after expiry than yes they can come after you since you can not use expired lisences.