Of course all those things exist, wherever organizations are run by humans, #proprietary or #foss. The difference is, whether we want to *just* deal with those things, or to deal with those things *plus* depending on infrastructure that we can't modify, choose to run ourselves, adapt the code of to our needs etc. Infrastructure where the goals are often antithetical to free and open source software.
The social network of the future: No ads, no corporate surveillance, ethical design, and decentralization! Own your data with Mastodon!