I would imagine it changes how one handles this. I don't think classifying calling covid "kung flu" as a hate crime is going to dissipate any incel rage, for one. If it was incel rage targeting massage parlors that were giving out happy endings, then their being asian is correlation, not causation, and it has nothing at all to do with Trump calling it China Flu.
Now if this guy said he wanted revenge for covid, it would have been a case for the China flu angle, but I still think that's nuts. Somehow we named all those diseases after places and countries for ages and it never made me dislike the people. I would imagine I'm the rule and not the exception.
I'm not sure how one really solves the incel issue, beyond raising people to better deal with rejection when they are small, but otherwise clean up the mess after seems like the only option. They are basically just serial killers without finesse, blowing their murder load all at once so they don't need to go through the trouble of not getting caught.