Legit real first post thing: maybe 3/4 of the folks I know from Twitter will probably wind up here if things go "full meltdown". That being said, I'm sad about the remaining quarter of folks that'll scatter.
There are folks in DevSecOps (a field I'm learning about/hope to move to) who were cool and VERY active on Twitter. The core people in that group have more or less said "yo I'm shutting this down soon. Catch me on the official Kubernetes Slack" which makes me groan because there is no way in heck I can juggle/keep up with Slack. I keep it installed only for MAGFest volunteer stuff but even then I ignore it/keep it closed 99.99% of the time.