Yea unfortunately eg Ubuntu’s bashrc has a script which will make it drop colors regardless of the presence of ghostty’s terminfo. Its `screen` will also fail, so e.g. it will refuse to upgrade to a new distro release.
Every terminfo is custom, to the terminal it applies to. It's just that most entries are 20+ years old and even glacial distros have converged on some version of the database that mostly worked, until the recent resurgence of interest in actually writing new terminal software.
Lots of jank due to this custom terminfo.