To distill it further: A bottom-up argument would be that "Because Elon has done X, Y and Z; I dispise him". What's going on here is "I disagree with Elon's fundamental values, but let me pick X, Y and Z to make my case".
Cherry-picking examples that don't accurately reflect someone's values is a common problem, but that doesn't seem like what you're describing.
"Values" aren't some abstract thing; they're only visible through actions. Saying things is an action like any other (an unusually significant and/or representative one if you are a public figure).
Rephrasing my statement: What's going on here is "I disagree with Elon's fundamental values, but let me pick X, Y and Z to make my case and ignore his accomplishments, almost impossible achievements and world of good he has done for the planet, humanity more broadly."
So, it doesn't hold water IMO. Future generations will look at HN discussions (if they're perverse) and exclaim "They really argued about a rude pedo tweet vs. making our species multi-planetary. Boy,..oh boy."