It is absurd. If these rumours are confirmed, Apple will launch products that are obsolete.
Which doesn't change the simple fact that Apple are still selling them (I'm skeptical about any more significantly new Intel Macs and suspect people are just finding product IDs that have got copied over with Intel or AMD driver code - but a new CPU or GPU option for the Mac Pro wouldn't be a huge surprise) .
The Apple Silicon equivalents of the high-end 13" MBP, the i5 and i7 Mini, the 5k iMac and the Mac Pro - not to mention the CPUs that are going to power them - are still in the realms of rumour... and we're only guessing that these machines will get 1:1 replacements. At the moment, a lot depend on what those new CPUs will offer.
Just because the M1 can beat/match most of the Intel Macs at single-core GeekBench doesn't mean that it fits everybody's needs.
How Apple are going to tackle the RAM issue (2 LPDDR chips soldered directly to the CPU won't cut it at the higher end) or whether there will still be a Mac Pro-like machine with PCIe/MPX is yet to be seen.
Subjects like how to run Windows and Linux on M1 are still evolving (yes, Parallels is out, but the only Windows option is a not-officially-supported "insiders" build - we're waiting on Fusion, no news on VirtualBox, Multipass etc., last I looked QEMU, UTM etc. were working but still evolving ) and all that is M1-related, and very distinct from the discussion about x86 BootCamp and virtualisation in the "WIndows, Linux and Others" forum.
Then there's all the stuff about RAM usage, swap etc. which is an important discussion (even if not everything there is... high quality, there are genuine issues) which is firmly applicable across M1 Macs.
Even in the future, when the transition is complete, I think there will be discussions about Apple Silicon that cut across all Macs & iPads. Apple now makes processors, so there are going to be discussions about M3, M4 and why ARM is better/worse than RISC-V that belong in the Apple Silicon forum.
If what you are saying is that maybe it's time for the discussions about the colour of the new iMac's chin to move to the iMac forum, then I don't disagree. (Except... that chin
is the computer folks, courtesy of the M1 - Intel needed the 'baby bulge' behind the screen to fit the heatsink...)