I recognize this as reactionary and low value, and will refrain from similar in the future. I fail to see how it is a personal attack, though. If you have the time (I know you're busy around here), the connection would be elucidating. I don't see lampooning a statement another has made as a personal attack on that person, especially when I'm attacking the content of the statement with no regard for its maker.

Asserting what a person "doesn't care about" in order to make them look bad strikes me as unduly pejorative and therefore an attack.

Ahh, so an attack on Musk as opposed to Marc. Makes sense. I wasn't intending to make Musk look bad with that statement, just pointing out what I believe to be the fallacy in Marc's viewpoint, but I get how your interpretation would be the common one. Thanks!