I’m not a HAM, but I had to stick 16 GPM in my Navy “A” School to advance. I actually did it the faster of my entire class, and received the Samuel F. B. Morse Award.
As that was over 20 years ago (24, in fact), I have to say my sticking skills have deteriorated almost as much as my body and mind! Heh heh
Takes practice. I can do about 10 reliably, and I have an app on my phone that helps. I use it like a video game.
Good skill to have - Morse Code. I stayed a tech for many years, not able to crack the 13 WPM. (Though life got in the way of the hobby.)
Advanced when they dropped the code requirements.