I don't really respond to people like that anymore and take anything they say with a grain of salt. In western society most normal people are the same, if they make eye contact for more than a couple of seconds and smile; say hello. There's nothing creepy, or annoying, or weird about that. If someone finds that to be the case, that's on them as an individual and it shouldn't be taken as the rule, this is what social awkwardness is. The reason I say take it with a grain of salt is because outside of some very specific cultural reasons if they are attracted to the person initiating the conversation with them, they won't find it creepy or annoying or weird despite what they may say on the internet; it's as simple as that.