No one's ignoring Trank as one of the main culprits of the epic fail that was Fant4stic. You said it yourself, the guy has been blacklisted in Hollywood.
I don't know what world you live in but not being able to find work is as scapegoated as one can get.
Meanwhile Kinberg, after epic failures as writer for Ice Cube's XXX 2, X3 (which was so bad it momentarily halted the X-men franchise and forced them, among other things, to do prequels instead), Jumper, This Means War, X-men Apocalypse and
Fant4stic is rewarded with Directing a film in the franchise he's written stinkers in.
As X-men fans I think we've earned the right to voice our opinions when we see a hack given a second chance for the umteenth time.
So yea I think you should hear more about Kinberg and things he should be blamed for! You don't seem to have all the info!