It depends on the situation. I had all of mine out this past weekend (in the US) and, because they were fully grown in, all they had to do was some local anaesthetic (about 8 shots around various parts of the mouth), wait 15 minutes, and loosen/pull them all. Total procedure was less than 30 minute and no painkillers prescribed after the fact.
I guess that depends on how users go about finding projects on github to file issues. If, for example, the user has an issue with this NixOS package (or debian package/any other repackaged example), and they start by just searching "python ambee github" or "Home Assistant ambee github" (seems like a reasonable first attempt to me) they will likely find the upstream near the top of the results.
Now, some users will perform due diligence and maybe find the NixOS issue referenced in OP and look elsewhere, but many will find the project and immediately file an issue there in the upstream, leading to the author's main concern of "I don't have time to support NixOS issues".
Yeah, the SMB SaaS ERP area is pretty small currently. There are some of us (I work for Plex Systems[0], which caters more to manufacturing customers), but we don't see as many headlines as the big names.