I think it's partly because we believe our ideals to be who we are and not what we aspire to. If you set your filter to 5'0", you can say you consider shorter

I think it's partly because we believe our ideals to be who we are and not what we aspire to. If you set your filter to 5'0", you can say you consider shorter people. And you can say it's for some other reason that you don't date them. As you obviously don't mind, because you don't filter them out explicitly. But it's odd that nobody under 5'6" fits any of your other criteria. We want to be seen as people who are non-biased, non-discriminatory, and all that. However, when there are real consequences, we tend to reveal ourselves.