I really hope this move toward crypto-specific cards leads to ATX motherboards having a full 7-slot 16x pci-e availablilty, at least on mid-higher end boards, and full 4-slot 16x availability on matx boards.
Tom's recently listed in a 2021 best boards list the ASRock Z490 Taichi as one of the very best, yet it only has 3 16x pci-e slots.
When spending 300, 400, 500 or more for a motherboard, "need" isn't a word to consider. These boards ought to have max slots and they currently do not. Even many of the HEDT boards for Threadrippers only go up to 4 16x slots.