I'm certainly very open to that being true, I'll just be honest and say that I've never seen any reports of it being a film that's popularity has grown over time and that has hung around on DVD/Blu-ray charts and then streaming. I will say the recent SNL sketch that portrayed it as being on Disney- and in which they kept specifying things like "I am the villain from this movie" suggests I'm not the only one who has the impression this hasn't become a beloved classic over time relative to the amount Disney pushes it.
It is, though, part of the Princess franchise which does generate a lot of money in its own right, so it has that.
I should add that I'm not annoyed at the amount they push it, just that it has seemed the case to me that this is a film Disney actively wants to keep alive. By way of comparison, Zootopia was a more recent massive hit and Disney has already virtually forgotten it.