Yeah. If he has some weird opener, they probably think that he says that to everyone, that it's his "go-to opener." That probably explains why he is getting so harshly rejected. The foids probably thinks he goes around and does that to every foid he sees (which they would be correct in assuming), and thus they think he is sleazy.
If he managed to make it come off as he was specifically approaching that person, because he thought they were cute and that it's not something he regularly does, he would have probably had at least 1 date by now. Call me blue pilled, but I think the impression you give is extremely important. You don't want to come off as someone who approaches every foid he sees. Obviously the better looking you are, the less it matters what you say, but he is obviously no Chad, so it matters.