I play around a lot with "historical" computers and software and am currently in another marathon looking at and revisiting a ton of old crap and the one thing that holds in general is how UIs are overall going backwards the more time passes.
I'm comparing to some 80s GUIs and even though some of them only have a usable maximum of 4 differing colors, it's still really refreshing how clean they are and how nicely all comes together - and If you want to dramatically change the overall style and tone, just change two of the colors. Since colors are indexed, this also changes all applications, icons etc.. so you remain consistent. Want to have a new mouse cursor or a new (bitmapped) font? Just draw them with OS onboard tools. These were all responses to technical limitations but something is seriously wrong if these GUIs feel more comfortable to use than using a browser on my modern PC. That's the big thing with the modern GUI: Nothing is consistent. Every Application, webpage etc. does whatever it wants from keyboard shortcuts to appearance. Compared to some of these old OSes and their GUIs, it looks and feels like crap.
Everything Linux GUI is a complete mess. I haven't used windows seriously in about over 20 years now but I doubt it's any better there. To be fair though, graphical user interfaces on everything *nix were never really all that good to begin with. Even as a terminal hobo I'll be the first person to tell you that there's nothing wrong with mice, GUIs or even the desktop metaphor, it just sucks how incoherent it all is now. I blame the internet and the browser-as-OS paradigm, a paradigm that is also inherently user hostile.
I think the religious adherence to TUIs by some you can observe in the Linux space is not really a stylistic decision by people who adhere to it or one of conviction, but more the desperate wish to interact with a computer with a consistent-looking and feeling interface. I count myself in there too.
I guess what I'm trying to say is, as much as I disagree with Wayland, that whole X vs. Wayland debacle is honestly really the smallest of all problems. It somehow should not be that I could imagine foregoing both and completely living in the Linux terminal, if I wouldn't want to browse the web (which honestly also gets less and less attractive as time moves on). What gives? What's going on with computers?