To be honest, shouting "rigged!" sounds a bit Trump-y for me. Saying ASOT-fans would only vote for Hardwell's.... I actually think it's different. Armin's festival-fans don't listen to his radio show (much). They only listen to his radio hits and festival hits on Spotify. Probably. His trance-y fans listen to ASOT. And people like MaRLo are incredibly popular these days, so to see his crappy tune so high, is not that surprising.
Imo the top 10 isn't bad at all. I expected it more cheesy, but at least it's sort of the trance side of Armin. So congrats to that. Shivers is the best, not This is What It Feels Like. Way better indeed.
Why so many 1999 (or simply say "old") classics are missing: Yes, you could only vote for tracks played on ASOT, since it's the ASOT top 1000. And not a trance-top-1000-in-general. So a lot of great ones couldn't even been voted for.