Emacs is unfortunately still single-threaded at its core, so it indeed happens that some subpar code can hang the whole editor while waiting for some network requests to finish, or take down everything in a crash (but this happens extremely rarely; I think I had only a few random crashes on Windows in years of using Emacs).
TRAMP to me seems to be the worst offender here. If your connection is slow or you mistyped the domain you pretty much just have to wait for it to time out
I use emacs all day every day, and the only crashing problems I've had has been helm-projectile lagging and crashing if you start typing too fast after invoking it.
