I personally haven't worked with many of the github apps that you seem to refer to but the few that I've used are only limited to access the specific repositori

I personally haven't worked with many of the github apps that you seem to refer to but the few that I've used are only limited to access the specific repositories that I give and within those repositories their access control is scoped as well. I figured this is all stuff that can be controlled on Github's side. Am I mistaken?