Also the enjoyment for many viewers is the degradation

Sure, for some that is the case. This will be vastly reduced with other social relations than those found in capitalism.

and the fact that the act really did happen.

For some surely, for some it often is about the simulated stimulation, e.g. Baudrillard.

Porn ruins relationships

Not so sure about that monocausality, feels too close to "masturbation ruins relationships" to me. The dyadic relations towards it and effects within the net of other social relations sure do play a role.

and warp male expectations of sex.

Sure, that is true, it is even more true than alternatives before films existed.
There are options that could alter what kind of sex is simulated, though. I do believe even when porn remains porn, sensibly produced compassionate porn with prelude and such can actually help to not have the current idea of sex. There are a few queer collectives who do produce a variety of scenes (and reproduce in part tropes and in parts go beyond them).

I don't think that with technology existing it is a good move to return to a pre digital state (in which many people I know didn't knew they actually weren't cis for quite some time).