I think that what they're saying is that Windows 11 would be like Windows 8 or Windows Vista - short-term and forgotten - and there would be Windows 12 that would be reasonably better than Windows 11. Heck, most devs that still support Windows 7 doesn't actively test against Windows 8(.1), so I wouldn't be shocked if Windows 12 exists in 2025 Windows 11 would be treated the same way.