It's possible to think he has done good things in the past, but is doing bad things in the present. And to believe/worry that his present (and future) actions may cause his 'net effect' on the world to become negative.
Adding to the "Too many of the good things he’s done seem to be despite him." - there was this tumblr post that passed by here on HN by someone who claimed to've been an intern on Space-X:
I never understood the point of the cake story, and it all might be total BS, but the longer this current saga goes on the harder it is to totally disregard the bit about "managing Elon".
And now he is helping to spread racism and anti-semititsm:
* https://thehill.com/policy/technology/3709609-racist-antisem...
It's possible to think he has done good things in the past, but is doing bad things in the present. And to believe/worry that his present (and future) actions may cause his 'net effect' on the world to become negative.