Yes, but CPUs and GPUs are hardly competition to those attacking with ASICs. What percentage of Bitcoin is mined using ASICs? Probably 99.9%

ASIC short supply means you can't easily or quickly recruit more ASICs for honest users to fight back.

And about the video, AA is great, but it assumes a rational economic actor. States don't give af about that. They can throw other peoples money at the attack indefinitely.