The fact that you have a learn-any-language-you-come-across policy is pretty neat, learning a language is actually one of the greatest mind-benders, learning many.. well, that's just darn impressive.

Criticism does burn, and as you mentioned, so does sarcasm. But if anything, they both imply that both the giver and the receiver of them are flawed and has room for improving something, good luck to you with learning many new languages, it deserves respect.