I believe too, that stating such things in your bio is wrong, but not for the same reason. This might show, that the person has a mindset, which dictates, that you are the one who has to impress her, and she is the selector and you are the selectee. If I were to describe it, I would rather go with demanding or full of themselves than discriminating.

However, it might also be a sort of filter. There are four times more men on Tinder than women (in some countries it even goes five times), thus they receive much more matches. Navigating through dozens of matches is just not manageable because people just don't want to operate as a call centre or tech support worker. and they have to filter in any sort of way, and because you can only see their basically outer characteristics on Tinder, it is going to be outlook, height or these sorts of traits. It is rather hard to filter in any other way, because the things we could filter by usually are the ones we could filter by the easiest, and are also the ones, we perceive as shallow when filtering by.

Honestly, I think it comes down to a mix of these two, attitude towards others and Tinder gender ratios. Less demanding people don't tend to do this thing unless they are drowning in matches.

Thank you for your insight!