Ooof, a lot of things.

• Github-like uptimes (95% or lower, basically) (yes, I know I’m on SDF’s lemmy, thanks)
• Github-like moderation (“we are right-wing ‘neutral’” and such asses, no Luigi, no guillotines for CEOs, etc)
• Github-like servicing (severely blocking what is accessible to guests or to API use, for example)
• Severe Big Tech dependency / cock-sucking (annoying Cloudflare captcha for example)
• There being flat out better options elsewhere