Earlier quoted context omitted.
I did some simple courses and they all started with this. Naming stuff 1-12 and I, II, IV etc. I found this much more relatable. Only keyboards seem to favor C major with their layout, which makes applying these "relatives" a bit more cumbersome, if you don't want to use that scale. At least on guitar everything looks the same.
> Only keyboards seem to favor C major with their layout Once you're familiar with the cycle of fifths, modulation becomes fairly trivial. You start to apply the appropriate corrections "sharpen this, flatten that" simply as a matter of habit. In fact, this is precisely how modulation arose historically; it used to be the case that all music was notated diatonically or nearly so (only distinguishing between B and B-f…
Sure, the steps are the same from the prime up, but with C major you end up on all white and with others you can end up on blacks here and there.