edit:
If you are asking about the Floobits plugin, ST 2 on OS X shells out to the system python (because of SSL).
So does that fix that issue he says in the end is "still open", about select etc not being present on some platforms?
(I don't have Windows or GUI Linux available to check).
I've been using ST3 dev builds for what, 2 years now? Rock solid all this time on OS X (with around 10 plugins). Only had one issue (high cpu load on search IIRC), that was corrected by going back to the ST3 beta for the 2-3 days it took for it to be fixed.
The ST2 users are part of a significant chunk of developers who just use defaults. They use the default shell, default themes, default mail/calendar/IM client, etc. They don't toolsmith. Their motto is, "If it ain't broke, don't fix it."
Considering the annoyance of dealing with unstable software, I can't blame them... much.