Serious answer:
With respect to net harm, yes, yes I do mean what I said.
Yes, I did feel that way before he bought Twitter.
One of the most important is not synonymous with one of the most beneficial.
Hyping Mars is cool, but forcibly cutting corners at Space X led to a catastrophic shredding of their launch pad. I would not allow this man near the decision making level at Space X, and I mean that in precisely the same way that I wouldn't want to buy a submarine from that see the Titanic company.
In terms of mitigating the effects of climate change, every little bit counts, but electric cars is probably the least effective application of his wealth.
While his PR image may seem appealing to you, it's like you've got the Oscar Meyer Weiner song in your head; you might even sincerely enjoy the product. But that also strongly suggests that you haven't walked around on the production floor to see how it's made.
With respect to the net harm to humanity claim, the aiding and abetting of intolerance and fascism has a direct cost in human lives.
And to be clear, no matter how loyal you are to him, and no matter how much you choose to ignore in order to sustain it, you're less than an NPC to him.