Agreed with all of this, 100%!
However.
Time and energy are still limited quantities. There's still only so many hours in a day. There's still only so much you can accomplish before you cannot even anymore, and need a nap.
BDSM play, for example. I don't want a robot that perfectly simulates a human enjoying a power exchange. I want to know there's another human on the other end of that exchange, who's having a real human experience, and who comes away from the encounter with a real human appreciation for what we did together.
Sure, your techparadise will make it easier for us to find each other and spend time with each other. But there's still a finite number of us, and a finite number of hours in the day, and a finite number of calories in our bodies. A really top-notch dom or sub is going to be in high demand. You can't just run around to all their customers (clients? friends? fellow enthusiasts? what do you call it when access to a person is a scarce commodity?) and tell them to stop desiring specialty sex play. Some sort of sermon about how all their needs are met, so if they are still unhappy about not finding a good BDSM partner that's their fault.
In your grim dark future, there is only mere meeting of needs, and kink-shaming. Lots of kink-shaming.