I am not sure you understand what "condescending" means, which is probably why you have been downvoted. If I, an American that speaks English natively, told an

I am not sure you understand what "condescending" means, which is probably why you have been downvoted. If I, an American that speaks English natively, told another American that also spoke English natively, that they seem young and should read more, that would still be condescending. This is true particularly if the statement was prompted by a disagreement over something like religion. Condescension doesn't only appear across language or culture boundaries.