That said I don't see any problem with MSFT dropping support for XP, they supported it much longer than any software by any vendor closed or open sourced.
GL getting support for RHEL 10 years down the line if you haven't upgraded your OS, and Linux from 10-15 years ago has as much in common with Linux today as Windows XP has with Windows 10.
Technically, they are preventing you from legally doing most work on it, since (in the US, at least) creating (not just distributing) a derivative work is an exclusive right under copyright for which they do not license you.
The alternative is to take your chances with free software where outside of any commercial support agreement with a specific provider you generally have no actionable guarantees of any kind that your support will last as far as the time your installation completes.
You can even argue that all of the things there end up being the users fault as they choose so for convenience.