I think your second paragraph alludes to the disconnect expressed in the first one.
The people "hating on github" and leaving it today, regardless of their (lack of) fame do not mind not being followed to the new forge, which may be a dealbreaker for you (an educated guess, from your phrasing). Conversely, you use GitHub "just fine" under terms the leavers consider dealbreakers.
What you are baffled by are differences in value judgements.