This would have been a huge problem in 2012, Now there are realistic solutions to avoid this. Just pay by cryptocurrencies on to a Coinbase Card and you can withdraw the cash and pay anonymously.
Imagine if every time you wanted to buy a cup of coffee or a video game you had to buy a special currency to do it? I bet less of both would be sold
The fact that people pay for porn at all is a small marvel.
I might be willing to accept that people would more motivated to jump through some hoops to get porn than they would for coffee if porn weren't available without that hoop jumping.
All this sort of thing will do is make it harder for independent content producers to profit
Once you transfer outside of Coinbase it's none of their business what you do with it.
It's rare that I'm excited about a service, but this one appears to come with no strings attached, the wallet is even generated on the client-side.