It does not matter what you think how good the M1 is, what the author states is the opinion of the potential buyer of a mac out there.
I do not see it as so much superior as he does, but the prices will crater because most think it is.
Even if the M1 isn't a complete upending of the Apple line, the next generation is expected to be yet another leap from the M1. They probably won't get another jump like that again, but 2 is more than enough.