I don't see why anyone is even bothering engaging this person with good faith. They're just "trolling" the same way people did back decades ago. Adding "lol" or "lmao" on to everything to pretend they're not upset, not reading anything, calling everyone stupid no matter what is said, always saying "I'm sitting here laughing at you" to again pretend they're not upset. They all ended up being incels and I wouldn't be surprised if this is no different