If you're not using Vim or Emacs, and not very proficient at touch typing, you're almost certainly limited by your typing speed.

Coding is an iterative process, regardless of whether you're handcrafting the code or using AI -- you need to move your thoughts / code / prompts from your head to the computer. You have to use the keyboard to do this. You have to do this over and over again, interleaving thinking with typing, and if you're fumbling for the mouse or smashing those arrow keys, your thinking is blocked.

When I code, typing is about 10(?) ercent of the time spent.

That's true for most people