He was apparently lucid and intentional. He was just a violent racist that got whipped up by conservative media and politicians, and radicalized to kill Americans.
Everyone can see this coming from conservative rhetoric and they are proud of it.
The shooter will probably be posthumously honored at CPAC.
I thought so too, but he had been involuntarily held for mental health crisis for likely just a few days when he was 15, and he wrote a massive fucking manifesto. Stochastic terrorism is real, but I think in that case it affected someone who had screws loose.