Why did Tolkien dislike Disney?

[Inziladun]

I'm sure others can elucidate, but there are indications he didn't like Disney's style of animation, for one thing. When discussing proposed illustrations of a German edition of The Hobbit, he criticized them as being

....too 'Disnified' for my taste: Bilbo with a dribbling nose, and Gandalf as a figure of vulgar fun rather than the Odinic wanderer that I think of...

Letters # 107

He seems to think "Disnification' to be a debasement of his work. Oddly, in my opinion, Peter Jackson could be guilty of similar sins.

In Letters # 234 he said the story of the Pied Piper was a "terrible presage of the most vulgar elements in Disney".

Vulgar has many meanings, but the two I think most likely to be relevant are:

1. crude; coarse; unrefined: a vulgar peasant, and
2. current; popular; common: a vulgar success; vulgar beliefs.

So he seems to have thought Disney an embodiment of crudeness and the "modern" fairy-tale he had no time for.