The brown fur hat adorned with holly leaves and the pipe of Nast's imagination was not replicated by Coca-Cola
So?
All across Europe you find the folk motiff of the onset of winter (or the winter solstice) being associated with an old man, possibly bearing gifts.
That's the idea uniting figures like Ded Moroz (Dziadek Mróz) and Father Christmas (who existed for centuries before being formalized in the Victorian era).
Calling that figure Saint Nicholas is just one more manifestation of that, another example of Catholicism co-opting pre-Christian pagan beliefs.
Deciding that one of these is the only true incarnation is very weird and I don't understand the logic.
Dude, life is too short to be so upset about Santa Claus.....
If I had my druthers Santa wouldn't be very well known outside the US but I'm not going to start ranting and raving about it.