Memmy has a broken implementation of instance filtering that currently needs to be configured on every startup, but it exists. Hopefully it will eventually be meaningfully functional. Precisely for the instance you mentioned.

For some people last in line is the best spot. Think about it: everyone else is getting pressure to get done and get out. No pressure for the last guy, and fewer people watching.

I recently built a 3D printer where the entire community for it lives on Discord. Their website instructions are horrifically out of date because all of the current changes have been discussed at some point on Discord. What should have been a 2-4 day project turned into a 2-3 week project due to the garbage involved in trying to strain information out of a massive multi-channel group chat with terrible search.