Do I have to learn the home-row style of typing in order to be truly efficient?

I play a lot of video games. Things get heated, and over time I gained the ability to type profanities at 120-130wpm at 95-100% accuracy (tested on monkeytype) and getting back to the movement action (WASD) quickly.

The natural placement for my left hand is SHIFT & WASD.
When alternating between w and b in vim, I often have to shift my arms or stretch my fingers a little, it's not as efficient as using ring finger for w and pointer finger for b; I use middlefinger for w and my pointer finger for b.

When I try to get used to (alternating) skipping words with w and b, it kinda gets just a tiny bit annoying.

I'm a beginner at vim motions. Is this a significant problem that I have to fix or not? I think it would cause alot of friction if I learn to type with the traditional home-row fingers placement.

Not to mention, we are supposed to use t f / alot right? So, do you guys think the cases where I have to alternate between w and b justifies re-learning my keyboard fingering style?