It's going to happen at some point, I agree, but I wouldn't count on it by mid-2022, which is important if you are looking to buy a GPU. The fact that my 1060 is valued at 150% it's launch price indicates that miners are also pessimistic about the speed of a full POS transition.

Plus, I'm not convinced that the transition will go entirely smoothly. Obviously it would be in miners interest to prevent the POS transition, and if there's a bug or problems with the new chain I could totally see a fork or political pressure to delay things further (I don't think either is likely, simply possible).