Ultimately in a democracy, everyone is entitled to their opinion. There are lots of people who think the way Elon does, but most of them aren't as prominent about it as Elon is. Seems to me that in a healthy democracy, we shouldn't be particularly upset if an opinion that's common among the general population also has some representation among the elites. https://today.yougov.com/topics/economy/explore/public_figur...
Indeed, if this weren't the case, and elites had wildly different opinions than common people (and also more influence), you could make the case that we were living in a plutocracy or an oligarchy, not a democracy. So Elon's willingness to say aloud what many common people think privately is pushing us away from that plutocracy/oligarchy failure mode.
I think Elon has made major mistakes -- funding of OpenAI being the biggest, from the point of view of humanity's survival. But the hate he gets rarely seems well-justified or rational. Here's my theory for what's going on: https://news.ycombinator.com/item?id=38046411