This is sort of beside the point you're making, but a lot of 1st/2nd generation Latinos still look down on immigrants. "We did it the hard way, so they should have to as well" similar to bootstrap mentality.
It's some real mental gymnastics, but I've had several latina girlfriends over the years and some of their families were poor or super well off, but they openly hated Mexicans and/or Puerto Ricans.
That number isn't really that surprising.
So I just watched it for the first time earlier this year and honestly it wasn't bad. It's cheesy (and by most measures not a great film), but it was genuinely fun to watch.