I didn't get anything negative from that article. It was all about how Rupert Wyatt has ditched on movies because he's afraid of messing up and making a bad one. THR never said the Gambit movie would be bad, but that studios are hesitant in going for Wyatt's vision when they often already have their own and rather than find a way merge them both, he walks.
He walked away from Dawn of the Planet of the Apes, The Equalizer, and an unrealized movie. Really this situation is not all that different than Edgar Wright leaving Ant-Man. Wright had his vision and Disney had their own. Nothing jived, so he walked.