This is just unironically asserting that white people are majestic Aryans

It's not, it's asserting that 35% of their ancestry is.

Also it's ridiculous to assert that hunter-gatherers accomplished literally nothing. What do you know about pre-PIE Europe and its culture?

It's obviously not a literal caliper take, it's meant to turn-on-its-head the original looneytune concern-trolly "questions" that were posted in the OP subreddit. If you can't understand that idk what to tell you. Obviously I don't think European hunter gatherers are inherently handicapped

Please tell me you aren't asserting that Indo-Iranians are East Asian.

All Indo-European/Steppe/whatever-you-wanna-call-em were admixed with ancient East Asian.