It's a free software provided gratis by volunteers. Desktop Linux is mostly by techies and for techies despite any other aspirations. Things that work great but require configuration don't always get looked at or worked on. This is especially true if they only effect a tiny minority of users.
https://linux-hardware.org/?view=mon_resolution
You should absolutely volunteer your time to address high dpi configuration out of the box across several of the most popular distros. I mean for example KDE software already works basically perfectly right out of the box. So all you really need to do is automate the process of choosing ideal font sizes, scaling settings etc.
Push out looks-right.sh to various distros to be run at installation.
