What defines "pickiness" , I wonder...
What's picky to me might not be picky to another.
To be more personal though and answer your question I have noticed that the more one smells , the less picky one becomes in a way and the more picky in another way.
What I mean is : when one starts to smell many different perfumes one starts to evolve and differentiate nuances and become disillusioned of many products out there that are not original etc. On the other hand , the more one is into perfumery the more one understands that there are no bad smells. Bitter , harsh , urinous , fecal even , all have their place and reason. There is no bad smell for someone involved in smells , there is perhaps an unpleasant - yet interesting- smell , not a bad one. Like there is no bad colour for a painter or a bad note for a musician.
So "pickiness" has to do only with personal preferences and not objective attributes of the said perfume in my opinion.
It has to do with knowledge and expertise and that goes over all the aspects of visual/sensual matters you described ( food , fashion etc)