Some distros do, and GNOME has been good to me too on many distributions with delivering a working virtual keyboard OOTB. KDE Neon, however, which I wanted to t

Some distros do, and GNOME has been good to me too on many distributions with delivering a working virtual keyboard OOTB. KDE Neon, however, which I wanted to try after reading that KDE Plasma 5.25 has better tablet support, comes without a virtual keyboard (and AFAIK does not come with an easy option to install one, you need to know that it you have to install maliit-keyboard).