I didn't see the thread on X, so I'm not sure how bad it got
but he does say it was him getting upset about public posts in the thread and not any private messages or anything like that:
To be clear… there was nothing close to a death threat. Just aggressive harassment (which was all very open for all to witness in the public thread)… and then my wife was addressed … and that was enough for me to flag it, report it, and then the post was taken down by a…