Ideally, a watch should have a perfect isochronism: different states of winding should not have any influence on the rate of the mechanism. But this is not an ideal world: we can't find a watch with a perfect mainspring, perfect escape,..., perfect isochronism.
Keeping the watch at a defined/optimum point on it's winding curve would – in principle – result in a more stable (predictable) rate (if all other parameters are kept unchanged). What your watchmaker suggests is that your wearing pattern does not allow the movement to wind the mechanism to a point where some accuracy is expected. Does it make sense? Yes it does.
But I'm not going to lie: I'm not comfortable with the idea of hand winding an automatic movement every day.
Most automatics don't accept this practice without showing premature wear and tear. However, I don't know this particular movement, I'm not an expert and if your watchmaker finds it suitable, maybe you should give it a try, at least, for a few weeks and see what happens.
Good luck and please, keep us informed.
Anyway, glad to see your Oris back, Jane.
Edit: Well, I just asked my watchmaker his opinion on this matter. I didn't mention the movement, so, his answer was, let's say, generic. He said that as long as the movement is well serviced and lubricated, hand winding the mechanism shouldn't be a problem.
However, if you feel the rotor spin or undue resistance in the crown
while winding, you should stop, because it usually means lack of lubrication or something wrong with the reversing wheels (btw, these parts are not expensive to replace, or so it seems).
Meanwhile, I found a post by Mr Al (Archer) somewhere and basically the same opinion.
Guess your watch is safe, after all.