That, and things like primarily designing the interface for a touch screen, despite PC touch screens not really taking off. Very out of touch.
That was actually an absolute godsend using the Pinephone, and IMO laid the groundwork for the Librem 5 (and modern Linux-on-Mobile interfaces) to take root. I do not believe PostmarketOS would be doing as well as it is if they didn't have apps that play nicely with touch.
You don't use it, and you don't appreciate it, and that's fine. I'd say it most defintitely has a place though, without even touching on the chicken-and-egg bit about touchscreen / mobile Linux not taking off vs Gnome pushing for touchscreen / adaptability before it goes mainstream
Though if you insist on click-targets that are exclusively for the mouse, I've found most KDE apps less mobile-optimized. The elderly and mobile users can appreciate larger touch-targets, and you can avoid GTK, which seems like a perfect compromise
But, you still couldn't resist complaining about the UI implementations, which sounds more like complaints about GNOME apps and GNOME Shell. Who cares if you think that GNOME Shell looks like it accommodates touch screens? Firefox, for example, uses GTK and doesn't seem to look like a touch screen UI to me as I'm typing into this text box.
Firefox has definitely been affected by this. The hamburger button is a touch paradigm which makes no sense on a large desktop screen with a mouse and keyboard-control scheme. It only serves to add more clicks to every interaction. Likewise the reduction of the scrollbar to a scroll indicator.
I was sad when Gnome 2 became Gnome 3 because I really liked Gnome 2 and Gnome 3 was broken. Then I moved on, but where ever I went insanity from the Gnome project kept leaking and making UIs worse.