Which aspect is unsustainable?

I think the immigration is what keeps Spain from turning into another Japan or Germany - a stagnant, overly old place stuck in time.

It seems in current discourse, turning a European country into another USA is a compliment.

It could be worse can only take a government so far. Eventually, just preaching to the choir catches up with you.

It isn't that simple, Canary Islands already counts with 2.2 million + tourists people and the fresh water is a highly risk resource even when desalinization plants are widespread, the groundwater aquifers are severely compromised. The mild weather heavily depends on the trade winds. But models predict that due to fact of being so close to Africa heat waves are prone to be more and more frequent compromising the water resources.

    and probably unaffected from climate change

No place is unaffected.

Islands are extremely vulnerable to climate change all over, as they are completely dependent in near-term precipitation for all their water (no rivers, no aquifers).

In the CPI Spain is not that far off from countries like France, Italy or the US and better than the global average.

https://www.transparency.org/en/cpi/2025

I'm currently living in Mexico and here corruption is a much more serious issue.

There is a certain brand of conservative Republicans who have learned to weaponize antisemitism against Democrats. The general operating theory is that, since the Holocaust, anyone with even Jewish heritage can do no wrong (though I question the sincerity of the view).

Palantir's CEO, Alex Karp, is the son of a Jewish man. I specifically say "son of," because I understand Jewish heritage to be matrilineal and I don't see Alex Karp engaging in any specifically Jewish traditions. But he does also seem to be one of the "Weaponize the Holocaust" Republicans. Thus, you get defenders such as this.