If things cannot be done purely through touch / the mouse, it is too hard for most people.

100%. Even as a power-user (understatement) who overwhelmingly prefers keyboard input to control things when I'm "gettin' stuff done", I will sometimes miss the general consideration level of Windows' input handling when it comes to mouse and especially touch. Mouse is pretty damn good these days on Linux, but touch...

Touch is abysmal. A ton of modern laptops have touchscreens, or are actually 2-in-1s that fold into tablets, etc, and the support is just barely there, if at all. I'm not talking about driver support - this is often fairly acceptable. My laptop's touch and pen interface worked right out of the box... technically. But KDE Plasma 5 with Wayland- an allegedly very modern desktop stack- is not pleasant when I fold into tablet mode.

The sole (seriously, I've looked) Wayland on-screen-keyboard, Maliit, is just terrible. No settings of any kind (there is a settings button! it is not wired to anything, it does nothing), no language options, no layout options (the default layout is abysmal and lacks any 'functional' keys like arrows, pgup/dn, home/end, delete, F keys, tab, etc), and most egregiously, it resists being manually summoned which is terrible because it does not summon itself at appropriate times. Firefox is invisible to it. KRunner is invisible to it. The application search bar is invisible to it. It will happily pop up when I tap into Konsole, but it's totally useless as it is completely devoid of vital keys. Touch on Wayland is absolutely pointless.

Of course, there is a diverse ecosystem of virtual keyboards and such on Xorg! However, Xorg performance across all applications is typically abysmal (below 1FPS) if the screen is rotated at all. This is evidently a well known issue that I doubt will ever be fixed.

In the spirit of Open Source Software, and knowing that simply complaining loudly has little benefit for anyone, I have at several times channeled my frustration towards developing a reasonable Wayland virtual keyboard, but it's a daunting project fraught with serious problems and I have little free-time, so it's barely left its infancy in my dev folder, and in the meanwhile I reluctantly just flip my keyboard back around on the couch with a sigh, briefly envious of my friend's extremely-touch-capable Windows 2-in-1.