Like I said in my earlier examples...
People who play videogames, people who use plugins with their DAW's, people who purchased software before it became subscription-based.
Literally anyone who wants to continue running mac software built before 2020 will be affected.

I doubt anyone will become homeless over it, but that was never the argument being made.

And I believe you when you say you won't personally be affected by it, but that doesn't mean nobody else in the world will want to run mac apps that are >7 years old.