The average Spaniard knows little about the EU except that Spain prospered when they joined.
The sales of newspapers is one of the lowest in Europe, as is internet usage.
If they get as far as reading a newspaper there is never any informative or negative press about the EU.
Spain embraces every stupid law that comes out of Europe and prides itself on being one of the first to implement them…at the same time totally ignoring them.
Of course support is high they have been on the gravy train for 10+ years 🙄