I don’t have Linux on a tablet right now but my first thought was that you might want to check into what Steam Deck users are doing with “Desktop Mode.” It has a touchscreen and virtual keyboard so it’s essentially a tablet-like experience (though it has touchpads and a few buttons, obviously, and isn’t a tablet). It runs KDE by default, which I’m not as familiar with as Gnome, but it might have more users than any other GNU/Linux touchscreen product.
Last time I had a Linux tablet, there were also some Firefox/Chrome/Gnome extensions that made it more touch-friendly. Like instead of selecting text, one finger swipe scrolled, two-fingers zoomed in, etc. like a typical tablet. Not sure if that’s still an issue. But if you do run into an issue, it might already be solved by an extension.
Hopefully, someone has more up-to-date advice. The tablet I had (and probably still have in a drawer somewhere) was an experimental Ubuntu Touch device and there’s been huge strides since then.
Yet another example of leveraged buyouts being bad and dumb. The “risk” may be technically on the company you’re buying’s books but it’s really on the employees who actually face the real consequences of the bet failing.