Fair. None of that speculation is inherently any better than the mass shooting speculation though, there's similarly zero indication he had anything personal against Trump. He even had potential dem targets in his search history. There's no sound evidence for anything so far, that I've heard at any rate.
Though I do think it's a little far-fetched that what appears to be an intelligent engineering student is going to think sneaking over and planting explosives is going to be a viable plan. That's a little video gamey.