There's no doubt that Orson Welles didn't have an easy time career-wise. The multi-talented actor, writer, and director had a moment of incandescent success in the 1930s and early 1940s, but after that his life was a long struggle to continue his often uncompromising work. As a result, most recent assessments of Welles tend to concentrate on those struggles and, quite often, his failures.
He was a real genius but isn't appreciated by many critics.