Hard to find something depressing with no experience.
What is depressing is that tens of millions JUMP on the platform, knowing already that Meta is evil and not caring.
The human race is digging it's own grave, and the handful that know better will just get pulled down.
up/down voting is simply a way to help comments you think are good, or agree with, become more/less dominant in the thread.
In some cases, comments are useful to explain why - but often that's just not the case.