You wish to lead with "dumb shit" in framing why people have a problem with Elon Musk? Why not lead with the Nazi salute at the presidential podium? That would more quickly get to the point.
Nazi salutes are protected speech and not "beyond politics". Yes it's disgraceful, and it's reasonable to leave his platform. But it qualifies as "dumb shit".
That is a good example of "dumb shit". No one believes Musk is a Nazi, but they try to make hay with it anyway.