Fouad Abiad made some interesting comments about this topic on his latest podcast. Pretty much, he was of the mind that Callum von Moger was overreacting and pandering to "cancel culture" by ripping down the Arnold posters he has hanging up in his workout space. I think Brian Shaw did a similar tear-it-down video.
Abiads point hinged on his belief that, if Arnold inspired him, and von Moger, and Shaw, as a bodybuilder and actor and not for his political leanings, then the two topics can be kept separate. Essentially, why can't Arnold still be an inspiring bodybuilder despite his political beliefs divurging from your own; those posters were put up in the first instance for non-political reasons, so why should they now be taken down for political reasons?
I think Abiads missing an important point regarding personal choice and, perhaps even more patently, personal emotion.
A hypothetical extreme brings this out more clearly. Imagine it came out that Arnold was a pedophile. I would be surprised if Abiad, or anyone, could then look at an Arnold poster on their wall and not feel disgust. I doubt many could separate the Arnold-bodybuilder, from the Arnold-pedoplhile.
I would give von Moger and Shaw the benefit of the doubt here, and assume their political beliefs are so strong on this matter that they could not look at their old Arnold posters and be disgusted, if only intellectually.