Philosophy and religion are very similar in their reverence for language. They both make the same essential mistake: they confer language with a power it does not have.

I think you will find that philosophers are very well aware of the limitations of langage. More so than just about anyone else.

Language does something [..] for the philosopher it's the non-actual possible world.

Philosophers currently talk about PW's, but that does not mean they reify them. (What would non-actual mean)? And don't forget that some scientiss, and some less wrongers, and EY himself, do believe in alternate worlds. You need a better example. Or a different theory.