Define "many". A PC game is bound to have bugs upon release, much of it due to the fact that you have to account for different hardware and OS configurations. Are the current bugs "game-breaking" in the true sense of the word, as is the case with a lot of games nowadays? Not by a long shot.
A PC game IS CERTAINLY NOT bound to have a large number of major bugs on release. If it does, the developer has failed. PoE has multiple. The devs failed.
It's almost as annoying to have people defend this nonsense as it is to have to deal with it. It is astonishing and disappointing to me that it seems like more and more people, and especially young people from lets call it the digital only generation, have been conditioned to expect and accept a broken product that may or may not eventually be fixed properly. This really just is not acceptable.