I didn't say it wasn't caused by AI.
I said that the people that show up in these threads are unusually toxic and irrational on the topic and share the same ridiculous framing that if they simply spew enough toxins on social media then Linear Algebra will uninvent itself.

You're exactly right.
The unusual thing here is that production is not following demand.
It isn't the case that RAM manufacturers are unable to buy more RAM manufacturing equipment. They're simply choosing not to invest in new RAM manufacturing equipment because, collectively, they seem to agree that the demand is a bubble which will collapse before the investment will break even.
Since that sector typically targets a 3-5 year payback window, it means that the market is not expecting demand to continue rising long-term.
The article is simply AMD pricing the bubble uncertainty into their product. We'll likely see the Steam Machine have a similarly inflated price (and also due to tariff uncertainty)