I don’t think DY’s scenario makes it any better. All it changes is the motivation to do these tricks.
But having a “good” motivation doesn’t really help. It is wrong to play with someone else’s emotions to advance your interests even if those interests are to not look picky.
You are dealing with another person, who is being nice to you, and considering marrying you, and is emotionally involved in the affair. Manipulating the other for your gain is very wrong, and I am shocked at DY’s laissez faire attitude about it.
I have a better idea: tell the guy on the date, that you want to say no, but that you don’t want to look picky. Don’t worry, he’ll say no for you, and drive you home right then and there.