KDE devs have been quietly working on Plasma Keyboard, a new on-screen keyboard for desktop and mobile part of the “We Care About Your Input” KDE Goals initiative. Although not ready for texting yet, it has been making progress. Hopefully it’ll be in a screen near you soon. Join the effort!
https://invent.kde.org/plasma/plasma-keyboard
Ehh, it has integrated touch gesture support (at least on fedora) so I feel like it’s kind of both.
It’s really not THAT bad. The fact that the text prediction at the top changes the position of the keyboard and can’t be disabled drives me nuts.
FWIW I use Fedora + Gnome on a touch screen only tablet and it all works well enough.