It's actually statistically true that the wealthier you are, the higher your emotional well-being
https://www.pnas.org/doi/10.1073/pnas.2016976118
Money does indeed buy happiness. Wealthy people don't have to deal with threats of evictions, worry over how you're going to feed your family, whether or not you'll be able to afford mental health care(wealthy people can quite literally buy the top-notch treatments for depression, anxiety, etc).
Sure, sometimes they can have a moment of sadness I'm sure, but come on. They are entirely out of touch with the suffering of common people, and I don't see any reason to say it's gatekeeping to express frustration through hyperbole at people who take advantage of and got lucky with an unfair system