Creating an account is not free. It costs 1-2 minutes of your time (assuming no errors, I just tried it and never got the phone number confirmation code, in this case I paid with my time and got nothing, this risk also has a price) and that a record will exist between your name and a list of all the images you’ve viewed and liked, millisecond accurate measurements of when you opened the app for and how long etc. for the next century, probably more. I don’t know how to price such a record not existing and different people price it differently but it does have a price.