This is exactly it. They don’t care about your post or you or anyone really. For them, it just feels good to bring down others.
You bring up legitimate concerns, but I think the bigger point here is that the Fediverse is not Reddit, nor should it be. I find that fragmentation mitigates the system manipulation and “gaming” that is often tied to people who rely on exposure.
It’s a little buried in the account settings, but Netflix does allow account sharing for an additional fee (~$7?). I know families that went with this option so they could continue sharing their account with elderly parents, and college aged children.
I imagine that if a group of friends agreed to split the cost of an account + fees, they would end up paying less than having individual accounts.
Monkey paw: your account gets flagged and eventually you go to jail