That's not a lack of backwards compatibility, that's an app purposefully self-destructing itself!
What I'm talking about is, if your widget factory uses some app to calibrate all the widgets which was written by a contractor in 2005, it probably still works fine on Windows 11.
I used some software called Project 5 from Cakewalk back in 2006, as well as VST plugins. I can still install it and use it on Windows 11. Meanwhile, basic plugins from that time stopped working on Mac OS X Lion.
That detail is definitely true, I just think that in practice the frustration with behavior like this from MS will trickle down(/up/whatever direction). Like the benefit of Windows as a regular user or power user was also that after the pain of dealing with whatever shit MS decided, you could configure it more-or-less however you wanted and it would not change. It will be delayed in the corporate world but it will happen.
What I'm talking about is, if your widget factory uses some app to calibrate all the widgets which was written by a contractor in 2005, it probably still works fine on Windows 11.