DDR5 has come down a lot in price so it's not really an issue.
1) 32GB DDR
5 is still almost double the price of 32GB DDR
4.
2) If you already have 16GB DDR4, and most people do, the cost of DDR5 is a flat $60-$80 tax for 16GB DDR5.
In both scenarios you are spending a $60-$100 extra for DDR5.
The 1%-2% you gain from DDR5 is not worth that price for most people. You are much better off buying a higher tier CPU or GPU if the goal is good bang for the buck.
Of course, one could argue that you "
invest in the future" by buying DDR5 now, but then again, I could just as easily wait for DDR6, or USB4, or GPU that will finally fix shader stuttering, etc.
It's a matter of perspective. To me the shader compile stuttering in PC games has become a way bigger issue than plain FPS. I assume next gen GPU will fix this, they will have to.
We are also in a period of massive inflation, where people are more worried about paying their groceries, heating and electric bills, than how much FPS they gain in Fortnite. It's not a great time for AMD to launch an expensive platform.