Even my MacBook Intel from 2015 is still receiving updates. It's slow, but everything works.
I tried to install stuff with Homebrew; it kept warning me that they don't support such an old macOS. Almost everything I wanted to install with it, it tried to do a source build, because the binaries did not exist for it. At one point it was building LLVM to install a dependency, which ran for almost one whole day, I kid you not, and still failed
Also, the latest version of Podman (both CLI and desktop) does not run properly on Monterey. Even if you manage to install those, you cannot create a Podman VM, because it relies on some newer Apple virtualization tech instead of QEmu, and that is not supported on Monterey.
MS Office, Adobe Lightroom, Photoshop, etc... The latest versions of these do not run on Monterey.
These are just a few of the examples.
On Big Sur, things were even worse. The latest versions of VSCode, VSCodium, Brave browser, and many things you might want install with Homebrew, etc. do not run on it. You will have to hunt for specifc old versions to install.
If the app devs drop support for a system that sucks, but it’s the devs decisions. One system I run I’ve had to air gap since it is out of date, but I’m not blaming apps. Though I gripe with the openjdk decision to not support Apple intel, it’s what it is.
Edit: im sure linux distros have problems as well, just like windows does with this. (Why can’t windows 95 run oblivion with 20 mods on it?)
In general, the model on Mac is that you need to run latest. It's not like you're gonna use it for a production server, they're meant to be personal devices, so upgrading them is not a major issue.