[phoe-krk]

> But, given that Linux is a community-supported operating system that does not need to make a profit,

Linux doesn't need money to make a living, software maintainers do.

> I see no valid reason for it not supporting every computer that can still be useful.

I assume the author is willing to pay all the people who are going to maintain all of those "computers that can still be useful" instead of demanding that they conjure spare time for that out of nowhere.

As much as I share the sentiment of keeping old hardware alive and useful, reality requires a question of "who's going to work on that".