[mtlmtlmtlmtl]

I think you're right in general, but I've seen some cases where it couldn't possibly be language barrier.

For instance I once saw one of those sex scam accounts on Facebook where the profile pic was some hot, obviously white woman, but the name was Vietnamese and all the posts were in the Thai alphabet. That to me seemed very deliberately designed to catch men who saw the big boobs and immediately switched off their brains. And obviously no one is incompetent enough to use the wrong alphabet by mistake.