I’ve not found that to be the case even after learning probably close on two dozen different languages. I won’t deny that there is a short upskilling time wher

I’ve not found that to be the case even after learning probably close on two dozen different languages. I won’t deny that there is a short upskilling time where you need a quick refresher but that’s no different to picking up old code you’ve not touched in a while in a language you do use regularly. In fact often the time you spend familiarising yourself with an existing codebase or new API also serves as a catch up for the language too. That said, I have personally found that it gets easier the more languages you learn because you get good at spotting similarities. Much like with spoken languages: people who are multilingual adapt to new languages quicker because they spot patterns to stuff they’ve learned previously.