My old Spanish profe clearly hated Catalonians.
If I´m not mistaken, you said he was from Granada, or at least, from the province.
These people are complicated for even those that they care for.
As I said, they have ´mala follá´. In English, they´re prickly pears.
The Catalonian is hated on the mainland because he is active, very salesman like, but above all, because they always want more.
I could go into a long diatribe, but suffice it to say, they were given, and have always been given, special leeway financially, and prosper. Because they prosper, they feel they shouldn´t pay taxes commensurate with their income.
In a nutshell, it is MUCH more complicated than that.