You won’t need to use this if you don’t want to. Not all discourse features or plugins are made for everyone and I think that’s fine.
However, if you’d like to use them:
Boosts will be moderate-able. You can also just delete them as admin and deal with the offending user.
Maybe? Maybe not. I think that fun features are totally appropriate and not all things need to have a pragmatic goal other than “fun”.
I get where you are coming from but I think Silicon Valley has made itself seem more important than it really is. The world’s problems will not be solved by software and this type of concern while warranted I don’t think is beneficial to a discussion on a fun feature in an open source platform that is a drop in the ocean compared to the content that exists in the world.