I would say to all the questions that you are asking : no .
No, because it is not necessary as the fascination for a great watch and jewellery can start at a very young age.
I know, and many also will do, a lot of friends who admired a 3119 when they just left puberty.
From my own experience: a golden Reverso was the first top brand watch that I liked at an age of 8, or so.
So there is no reason for a manufacturer of classic watches to offer a younger audience, when they wil come to them
anyway, if they can afford it ofcourse.
The current Nautilus range, WG calatravas are young enough, I would say.
Anything younger, less expensive would not be PP or serious jewellery anymore.
I mentioned it in an earlier post before: the term "entry level" sounds quite awkward.
Any PP is an exceptionally beautiful watch, regardless the price, complication or "market value".
I associate the brand with descretion, understatement and elegance and that is not a matter of being 16 or 60
and definitely not of "Monet" !
Regards
Moritz