I was just thinking about this today. I nearly bought an R5 earlier this year but am glad I didn't, since I have just been using my S21 Ultra for daily photos and hardly shoot anything nowadays. However I don't think I am going to sell my L lenses or my Fuji lenses as long as they are good enough for matching bodies.
It might make sense to sell the 5D3 and XT-1, or perhaps to just let my kids learn on them. Or I could just sell all of the Fuji gear (which I only really bought for the Velvia etc. profiles, none of which I really use nowadays) and get an R5 or R6. That would seem to make more sense.