No doubt that bitcoin had been accepted long time ago as a payment method,that's the reason of it's creation to serve as an online payment option that doesn't require the involvement of an intermediary to execute payment.Exactly,the porn industry can't be left behind as other industries have been accepting Bitcoin and other cryptocurrencies as a method of receiving payments.
I would add to this argument. There are a few industries where people would like to hide their identity and porn websites are the ones where people would like to visit and pay anonymously. The other industry is the gambling and crypto payments give a boost to this industry too. The people who are still using credit card on porn sites are either not aware of crypto or there is something wrong in their approach
