He did put a view forward, in a book submitted for publication to the world at large. Those who publish material should be well aware that that material might come under scrutiny.
It's an interesting take that people who have passed on should not have their works analyzed. Does that count for posthumous praise as well?
The whole 'this is just wokeness being unfair' diatribe we keep hearing kinda falls flat when we're talking about Nazi sympathizing. Isn't this the one thing we're all in agreement is genuinely terrible. Didn't we fight a war over it? I think pretty much the whole world was involved.