The unemployment benefit in Spain (Paro) is increased every year in line with inflation, it’s double than that in the UK. It’s the same for all the other benefits, they’ve all been increased. There is no direct equivalent to the UK housing benefit, there has not been a need for it, but subsidised rents are now the norm.
Where Spain succeeds over the UK is in making claims by foreigners almost impossible. The Social Security offices have notices on the walls in one language only, nothing like the nonsense back in the UK where they have as many as ten different languages and claimants advisory groups to help the foreigners.
I am unable to understand why the failed expats gleefully report any harm that befalls Spanish people, it’s perverse.