"If you don't like it don't use it" fallacy doesn't work because I'm not talking about private but professional use. Look what happened with GNU/Linux, one cannot "not use it if one doesn't like it" because someone else already decided, also out of incompetence stemming from ignorance (which I'm then forced to deal with, unnecessarily). So there is more than plenty of reason for deep seated bitterness and resentment.

Of course I wouldn't use those privately but private use is irrelevant.