I don't much care for their term uggos either, it's rather crass. However, the op is definitely correct. By removing photos it removes a dramatic advantage that

I don't much care for their term uggos either, it's rather crass. However, the op is definitely correct. By removing photos it removes a dramatic advantage that attractive people have on dating sites. It takes away one of their best matching strengths, one of the core human matching elements, and the one that is often a first-filter item. It is obvious if you do that to a group of people, they will not be inclined to your service: they gain little benefit (if any), and lose enormous advantage.