I dont believe it neither (on my 4th/5th, french too). There is often new mental model required, ie with French you need to catch first parts of words since end

I dont believe it neither (on my 4th/5th, french too). There is often new mental model required, ie with French you need to catch first parts of words since ends are not pronounced, and other quirks. German has these uber long words. Grammar is always a bit different. Ordering in sentences. And so on. Overall it increases neuroplasticity, best starting as kids when brain is more adaptive. Big gains, regardless if there are some miniscule disadvantages overall.