Like, English is a famously difficult language, and Spanish is supposed to be easier. But babies learn English or any language instinctually.
So do babies learn faster if the native language is easier, or do they acquire language at a constant rate depending on their brain development or whatever?
Yes, I agree, learning to write English is harder than to write Spanish, in fact Spanish has the most phonetic writing of all the languages I know. But your question was about babies learning, which is solely spoken language, you only learn writing after you’re already a fluent speaker.