[ehsankia]

All of 4chan is one community. All of Twitch is one community. All of reddit is one community.

Youtube sucks because it has videos that pander to kids. Twitter sucks because it because it's because talking about their mundane life. Facebook sucks because it's people sharing fake news.

In social media, whenever you're having a bad time, it's most like your fault. When you say X sucks, You're really saying that your friends / the people you're following / the communities you visit suck.

[TeMPOraL]

That's like saying a nation is one community. It's not. It (usually) shares a language and some common values, but otherwise there's greater diversity within a nation than between nations.

Still, there's a lot of truth in "When you say X sucks, You're really saying that your friends / the people you're following / the communities you visit suck". It literally takes seconds to join or leave an on-line community. On the Internet it's more true than anywhere else that you get the communities you deserve.

[skinnymuch]

FYI That's OPs point. They are saying all those social media sites are the same to prove the point that they aren't. As evidenced by their next paragraph.