( not OP and not disregarding the issue at hand ) have you tried practicing usage of the shift key opposite the key you want to press? Learning to make that change was hard for me, but is one or if not the largest improvement for me over the years in both typing speed and general typing comfort

Assuming a standard QWERTY layout, shouldn't you be using the left shift when typing < or >? It'll significantly reduce the contortion effort in your right hand. Same goes for most chords- use opposing hands for the modifier and symbol keys.

(Oddly enough, I don't bother doing this with ctrl/cmd + a/s/f/z/x/c/v, but I think that is mostly because keys to the right of the space bar vary so much between laptops and keyboards that I never bothered trying to stick with it).