Zoom is adding in email.
Years ago I worked for a bank. You know what happens if you set up bill pay with a bank? You're unlikely to end that relationship. Because who the fuck wants to do all that work to move.
Your labor, your suffering (cause setting up bill pay sucks) is an egress fee.
If you have GitHub acting as anything other than your public facing code repo you're locking yourself into the platform. Bug tracking, code review, CI pipelines, GitHub features that are going to keep you from moving quickly if you need to change providers.