I think having that damper valve in there is going to be the fly in the ointment. Things have changed.
I don't know if you could delete the valve and retrofit some old-style dampers rods, if you could even find some. Aren't these new forks 49 mm? Maybe you could research the parts books to find some from a newer fork that doesn't use the valve. They would have different sized holes in the rods.
Looks to me like the drain screw is in the normal place, so I don't see why you can't just remove the top caps, drain the oil and refill.
Have you read through the entire procedure, to include any special steps needed for refilling? From the 2 sentences you posted, it looks like if the forks passed the leak and wear inspection, there is nothing else mechanical you have to do. I would have to see the whole thing before making some sort of decision to delete steps.
They have a rebuild kit with all the wear items and new fasteners and seals, like it is routine to just go ahead and do everything since they are forcing you to take everything apart, Just for a simple oil change.
I'm not trying to say you have to do it by the book. Lots of time, a pro or even a shadtree, has developed their own procedures that don't follow the manual to the letter, from experience. Me personally, I just go ahead and do a full rebuild on my forks every 4-5 years, with all new bushings and seals. Everything is already apart for the fluid change anyway.