I call that "a way around the problem"
I'd call it the 'standard way of working' and it's one that I (and a lot of my professional organist colleagues and friends) have been using for years - long before keyboards were thought about. I go back so far in this business that we didn't even have User Memories. Hand setting everything for every tune in a two hour concert took some hard work, and skilful, very fast hand moves!
While in an ideal world you would be able to store a personalised 'startup' setting and have it load automatically when you switch on (and of course it's been requested by me and many others at meetings with Yamaha staff over many years!) the fact is that it isn't available. It's also a fact that if you personalise
everything you need, save it to one memory button and save that bank of 1 setting as something like "AAA BLANK", it's gettable in three button pushes on S and T class keyboards - and that takes all of two seconds, possibly less. I haven't counted the number of screen touches on a Genos - I'll check later.
You then also use that startup setting as the basis for all of your registration banks, knowing that all the settings and adjustments you like will be carried forward as required.
Bottom line? If enough people wanted it, Yamaha could, and probably would, put it in. The fact that they haven't says something about that. And when the 'work around' is so quick and easy, and 'transportable' between keyboards via USB stick, I personally don't think it's an 'essential'. I certainly don't miss it.