Tinder has two goals:

- make the most money from vulnerable people

- make non vulnerable people behave like if they were on a social network

Having different price, per geography, gender and age is just a consequence of the first.

It is not surprising that you can't see anymore the instagram handles of people on tinder. Instagram is a direct competitor to tinder for most of their users ( the non vulnerable ones).

Actually that's very smart, Tinder is probably the only big social network (tinder is not a dating app) which didn't require ads or a lot of funding to get big, only because one small portion of their user are willing to pay to be part of their community