This is not true, sorry. Newegg has for sure had the RX 6600 going for $209.99 in the past month or two, and I think it briefly touched $199.99 before. RX 6650 XT has been waffling between $249.99~$279.99 over the past several months.
The AMD MSRPs were bogus for everything beyond the RX 6800 at launch, maybe the RX 6700 XT as well. Nvidia gave theoretical MSRPs for the RTX 30-series that were almost never viable during 2021 and early 2022, but those were the prices the GPUs would have been had cryptomining not gone crazy.
AMD in contrast jacked up their MSRPs on the RX 6600-class by roughly $100, so that it could take a bigger slice of the pie than the AIBs and retailers. (If anyone thinks AMD is "nicer" on prices than Nvidia, just remember 2021–2022. It's a corporation that is every bit as greedy as Nvidia.)
To be fair, AMD wasn't alone, and Nvidia's RTX 3080 Ti was crap pricing as well, which we're now apparently stuck with. 3080 Ti really should have been $799 MSRP, maybe $899 at most. I'd also say that the RTX 3070 Ti should have taken over the $499 MSRP of the 3070, pushed the vanilla 3070 down to $449 or even $399, etc. RTX 3090 Ti at $1999 was a joke as well.
Bottom line is that, were the past two years "normal," we could potentially use MSRPs. But they absolutely were not normal and thus pointing at them for anything is futile. The street prices now make far more sense than the original MSRPs on many GPUs.