[unfunco]

OP hasn't necessarily joined 2000+ channels, their company has 2000+ channels, it's a similar situation in most companies I think…

I work for a 200+ person company and we have approximately 800 channels, maybe 20% of them are work related, the remaining channels are noise. There's a channel wherein some people in the company pick up on grammatical and spelling errors of others in the company and post them for others to laugh at, there's another channel for the three people in the company that think they know latin to make the same Monty Python joke (Romani ite domum) over and over.

For the current project we're working on, we've put in a no robots rule into the channel (no Git/Jira/Travis notifications) and when one of the higher-up managers in the company decided to join the project channel and make two joke-like comments which added no value to the project, we had the project manager remove him from the channel.

Slack has over-casualised our company, for work it sometimes works well, for distractions it almost always works too well.