Trump just dredged up Hasan Piker's "America deserved 9/11" comment from 2019 to attack him. This is the first time Trump has actually mentioned Piker. The timing is absurd: Trump's apparently been sitting on this for years waiting for the moment to weaponize a controversial take from a Twitch streamer. It fits the pattern of his entire orbit right now - scraping the internet for grievances, no matter how old or obscure, when they're useful.