I get your point, and I admit I don't even know what language I think in anymore (if that's even a thing). But I'd argue that reasoning or talking about code is

I get your point, and I admit I don't even know what language I think in anymore (if that's even a thing). But I'd argue that reasoning or talking about code is not the same as writing code. I went to university in Uruguay, so naturally when discussing stuff we'd say "son dos 'for' anidados" when a word didn't have a similar-sounding translation, or "escribir una función" when it did, and I'm fine with that. Discuss and reason in whatever you want. But very early on I started writing identifiers and comments in English, and I think this is critical if you want your work to go anywhere. Say you write a piece of code and put it in Github, with Spanish identifiers and comments. You've just massively increased the barrier of entry to most collaborators in the world (have you ever come across code commented in Russian or Chinese? Not fun). And this is just identifiers and comments, not keywords. I imagine using an entire programming language in anything but English can only make things worse :(