This thread is redundant with
this one (which, Calum, you recently posted to, albeit off-topic
), but since you paraphrased something similar to what I've said, I'll bite.
For the record, I believe there's more than one correct way to do practically anything, and the more complicated that thing is, the more correct ways there probably are. My horn professor back in college used to say that any technique any of us students could come up with was fair game, so long as the end result was:
1. beautiful sounding;
2. sustainable (i.e., not inducing unnatural fatigue); and
3. unlikely to cause practitioner or listener harm.
I've found that to be true in many different contexts (including non-musical ones). So if a player (e.g., Johnny Doran) starts out mashing the regulators on the same day they first figure out how to pick out "Hot Cross Buns" (or "Thelonius" or whatever) on the chanter, and that seems to be working for them, then they're doing it right.
But for most of us mere mortals, the best way to tackle any complicated problem is to start out with a subset of the problem space. This is acutely so with the UP, which is not only complicated to play, but even to simply keep in playble condition. Adjusting both chanter and drone reeds for seasonal changes, for example, is more than twice as complicated as maintaining the chanter reed alone.
So, many of us find the most sensible program of variable-management to be the traditional sequence of (1) start with chanter/bag/bellows only while learning basic chanter technique, reed-tweaking, and "automating" bellows muscles; (2) add drones when student is "ready" (is either strongly motivated to, has mastered the basics, or comes into a half set); and (3) add regs when student is sufficiently comfortable with half set (because the last thing we'd want is for anyone to remain comfortable, playing uilleann
pipes).
That isn't a law; it's a rule of thumb. So what's the problem? It isn't like the NPU will confiscate your instrument if you choose a different approach.
Cheers,
Mick