Does each language have "lefty loosey righty tighty"?
The world has a lot of different standards for a lot of things, but I have never heard of a place with the default screw thread direction being opposite.
Definitely not a common phrase. I've never heard of it (from Spain) and I just asked about 10 others from other countries and only one has. We usually would just say clockwise or counterclockwise
I don't speak Spanish, but is there a reason this works well as a mnemonic? Like is there a reason you can't misremember it as la izquierda oprime y la derecha libera? Because the English phrase works by alliteration.
Edit: i guess if you think of it in terms of politics that helps