I think at the moment is a very exciting time for GPU evolution as Ray Tracing and DLSS are going to be a real game changer.
I don't know how well these new techs will work with the 20XX series of cards but they are out there and there is no going back. Even if the 20XX series don't quite have the horsepower to fully benefit from the tech the next gen of cards on 7nm will definitely get us there.
I do think NVidia deserve some praise for trying something totally new, unfortunately to do this means using huge dies which are expensive to manufacture.
The worst that can happen is the new techs don't run very well but on the positive side the cards are still going to be noticeably faster than the previous Pascal cards. If the new tech does work well then that is a very big cherry on the cake.
Congrats to anyone buying a 20XX series card, exciting times ahead.