I still consider them interesting and fun to use nonetheless.
In general and in life, i am not a huge fan of any kind of categorization, but i can see the need for it ,and sometimes, they can help me get something i want , even if it's lead me there via the wrong direction.
And other times, i just see stuff than i wouldn't have encountered otherwise by my own means, if you know what i mean.
Is it truly meaninful you ask? only if you find them categories fun and somewhat informative.
There is not one official ,regulatory, legal way to categorize the scents, but we can only rely on the info the house gives us in the sense of in what category they think the fragrance in question is and what their intention is for that kind categorization.
In any case, i think it's very much a personal thing.
If someone says "x frag" is an oceanic fourgère and another says it's really an aromatic hespéride, i would take note but i wouldn't say that one is more right than the other (at least not superficially) since everyone has different views and it's all very relative.
Pink sugar considered an Oriental? IMHO, that's pushing the envelope, maybe just for the sake of being controversial, but we have to see what that person (or the company) considers and oriental to be like.
My personal opinion would be something else, and ultimately the most important, at least to myself.