Unlike, say, Adobe, that merely piles incremental bloat upon incremental bloat, and calls it a "new version of the suite".
The complains are from people that:
1) see a black interface as some kind of iMovie-fication (iMovie is black, so they have dumded down FCP).
2) Think professional software means convoluted GUI (they made things simpler, so they have dumbed it down)
3) Expect a rewrite of a 10+ year old codebase to have feature parity with the old version from day one.
4) Expect a rewrite of a 10+ year old codebase, with the intention to support modern movie making practices, to also cater for obsolete practices that the old version covered (like tape editing).
