Why would you need to learn a separate language with ChatGPT capabilities in the world? Learn one language well and let the computers translate between that one and the others.
Learning another language can also teach another way of thinking about things. There are also nuances that AI isn't going to help you with.
For instance, 'How's your father?' in Spanish means 'What is your father like?' In English it means 'How is your father's health?' - or it could also mean 'sexual intercourse'.