I think it's important to note that this stochastic terrorist has been activated by the right wing propaganda world. He also posted COVID conspiracy theories online. Heavy.com has an extensive discussion of his website, FB page, etc that's worth a read.
https://heavy.com/news/david-depape/
He's been living with his now ex-GF, a Russian woman named Taub who is a homeless advocate and also 'nude activist.' Makes you wonder who helped radicalize whom.