I'm more fan of the https://www.vim-hero.com/.

Also, one think I was surprised by when I switched to Lazyvim/Ideavim/vscodevim setup few months ago - it's a lot of fun. Learning vim properly is like the dark souls of typing. Sure, you probably won't be as efficient for the first few years, but learning new motion combos is pretty fun, to the point where the minor loss in efficiency doesn't really bother me. Blasting out combos you've been practicing to do that one move efficiently, or discovering another new cool way how to do something is a continuous and fun process. It's basically gamifying typing.

So, if you want a boost in efficiency, just learn all the keybinds your current text editor has (jump to next param/function, multi-line editting, go to definition without using mouse, etc.), and start using them. You'll probably master all of them in few weeks and be much more efficient.

If, however, you enjoy slowly mastering something, vim will give you years of stuff to learn and master. Is it worth it? Probably not, but it's suprisingly satisfying!