Because of course, we all opus whenever someone makes comments we haven’t discussed in 4 years. It’s a completely normal reaction.
I remember on a music forum once...some guy said he hated Roland Jupiter 8 synths. Considering I hadn’t mentioned one in 4 years, I took great offense and opused immediately.
Perfectly rational reaction.
He said it was the straw that broke the camel’s back. IOW, he’d observed other nutty comments over the years (not necessarily directed at him) and it finally got to him with a comment made a couple days ago (that has since been removed by the moderator).