I would have thought of all examples this would be less controversial, it had nothing to do with politics or ideology or religion, it was an entirely technical belief, he felt chasing.
In an alternative reality he may have switched to another area of study after hitting dead ends with unified theory with better results.
It is not for us to say or expect what luminaries do, it is privilege for us they do share anything at all, but it is not also true we do lose a bit when such brilliant minds do get sidetracked ?