After a bunch of comments pointing out to the fact that my GNOME touch issues were linked to Ubuntu, I did another try, on Fedora, this time, and yeah, it's MUCH better.
I also gave a shot to Plasma Mobile (excellent), and Phosh (less excellent on a big screen):
@thelinuxEXP Thank you for making this follow-up video and included Fedora Plasma Mobile. While not many people seem to be interested in Linux tablets at the moment, I was one of the few that watched both videos.
I do have a Lenovo 2-in1 tablet running Auora, although if they ever do provide Plasma Mobile images, I would rebase to that.
Nick @ The Linux Experiment
Daniel Melzak