We had 91% compatibility on OkCupid.
If you only have one , it makes someone less likely to actually pursue you because a they don't have a good idea of what you look like, b it gives off a sense of low confidence, and c it looks like you're not putting in any effort.
Want to know if they liked you first before you liked them? You can even set your pronouns at registration! They either meet the criteria and like I said, not a lot of filtering going on from my end or don't.