I guess this also must be an additional layer of hellfire for dyslexics…

Do you not tab-complete your commands?

Sure I do (although nowadays Strg-r does most of the heavy lifting for me), but as a decent touch-typist I am often faster directly typing short commands, like passwor… damn, I mean: passwd ;-)

You might be right.
I am German and never had a problem with pwd… The “double-you” certainly breaks some easy phonetic connections you would otherwise just make…

But the only command that I have to look up every damn time, although it has no abbreviation at all, is useradd.
Oh no, wait, I mean adduser!
… No, wait again… aah…

Now this looks like an interesting read. Thanks!

On a side note:
I hate it that the password-change command is minimally abbreviated to “passwd”.
Come on, making it much more complicated to remember and saving just two freakin letters??

Well, my KDE-based distro on my 10-year-old cheapo (350€) laptop feels snappier than Win11 on my brand new 1500€ work-laptop.
Admittedly, there are some company specific things like security scanner apps (and the mandatory MS-Office behemoth…) that are not present on the Linux-machine, but it is still a 20-core/64GByte high end machine behaving more sluggish than a 2-core/8GByte totally outdated potato…
So, I am not really surprised about OP’s snappiness observation.