Except that was a reference to a videogame. Also, the guy who shot Trump - the most major right wing dude - was a conservative. And I'm not American, maybe guns are just that regular to everyone there, but being into guns is typically not a leftist position. And (not saying this is proven in this case) but the whole thing with Nick Fuentes and the groypers shows that there very much are right wingers that fucking hate other right wingers. Even Laura Loomer, who's apparently friends with Fuentes and Trump, was incredibly critical of Charlie Kirk days before he got clipped.
There's examples a plenty of right wingers/white nationalists spending a bit too much time listening to these online hate mongers, and deciding they need to do something drastic. On the very same day Kirk got shot even.
It just seems wishy washy for a leftist who wants to assassinate a major right wing figure, and it being purely for their left wing ideological reasons, to put outdated internet memes and videogame references on there. But who knows, maybe this time the left actually did get a shot off.