I'm sorry, I genuinely do not understand your point. If I think something you say is incorrect, and I say "Hey, I think this is not right. Not 100% sure, but I think it isn't", you're saying that this is not "saying that something is wrong"? English is my second language, so, I might be missing some nuance.
English is my second language, so, I might be missing some nuance.
Indeed you are, but had I known English was your 2nd language it would have made more sense and I probably wouldn't have even corrected you since your English is very good.