That's "Linux" the kernel, not the operating system. No one building a 'modern' desktop OS on top of that kernel cares. Download a 20 year old Linux binary and try running it on a random up to date linux distro. Unless it's a trivial program it will almost certainly fail.
Re:Linux 5.19
by umanwizard on Tuesday August 02, 2022 @07:53AM
(#32317474)
This post is about the kernel, though.
That would seem to be contradicted by Linus's "WE DO NOT BREAK USERSPACE"[1].
The Linux community clearly cares for backwards compatibility too.
1. https://linuxreviews.org/WE_DO_NOT_BREAK_USERSPACE