apparently the shooter also verbally endorsed an RNC candidate in Texas in a video that was then deleted, who had white supremacist ties. Could be a troll however, as with the rest of it.
Whatever this person was, it wasn't caused by leftist critique. I think more central question isn't so much political ideology, but whether this person was a psychopath or a sociopath. And based on what leaked regarding the manifesto, it seems more like a psychopath - the talk of wanting to feel powerful killing children is a red flag. And the Trump and Elon killings could be apolitical to such a person. Rather just using assassination talk as a superficial and self-aggrandising ways to boost an ego - to be remembered by killing a famous target. Nothing to do with ideology. To go down in the history books.
But my concern is less all of that and just wanting trans people not to be targeted and set up by influencers or the Trump admin for some vigilante justice, rights reductions, or bullying, with all the fear mongering. Nutjobs are worked up enough about bathrooms and sports, without adding ticking time bomb child killers to the ongoing rhetoric.