I would not be surprised to see AMD & Nvidia both NOT release their new stuff this year. Neither has stable supply still, and their latest line-up still doesn't have the market penetration they undoubtedly want, as evidenced by the Steam survey. AMD can likely just focus on Zen4 this fall, and Nvidia could get more 30x0 into the market.
While the Steam Hardware survey is a good piece of data, it shouldn't be taken as a representative of the market entirely. It still requires people to actively submit their hardware specs to Steam and as far as I can recall, I did get the pop-up saying if I would like to submit my results in, but I can't recall the last time I got this pop-up. Plus it requires me to actually run Steam. Considering the top 10 PC games played recently, only one of them actually requires Steam to run (CS:GO). The rest are either standalone (e.g., Minecraft, LoL), are on multiple platforms (e.g., Rocket League, GTAV, Apex Legends), or are exclusive on the publisher's launcher (e.g., Fortnite, CoD)
Also consider the pandemic did cause a spike in PC sales, and while I'm too lazy to find out what percentage of that pie was from which system builder, I'm more than certain a lot of them sold with RTX 30 or Radeon RX 6000 cards.
NVIDIA and AMD sold plenty of current gen GPUs. There's not a supply problem in its entirety. There was a problem getting loose cards to consumers who wanted it.