Spanish speaker here, I prefer to read documentations or examples in English, I never try to get this kind of content in Spanish and if I'm redirected to an Spanish version I want to go to the English one.
That said, I meet a lot of people which are learning how to code and they prefer Spanish over English, most of them don't usually has a good level of English too so that is expected.
I also know there are people preferring to read everything in Spanish if possible, even translating words which aren't usually translated (eg. use depurar instead of debug which is most common even in Spanish content).
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