It had his home address, phone numbers and social security numbers. A reasonable person would just redact those before publishing and then it wouldn't have been an issue.
> it seems pretty reasonable
It seems like overkill to me. Harris's and Wallz's residences are well known.
Sophisticated public manipulators - and I think we can call Musk one of those - of course don't openly discuss it. One way to analyze the action is to look at the outcome: Musk is certainly sophisticated enough to anticipate the outcome and that would factor into his choice. Cui bono?