"That said, the cost to me of other people doing the work of not being offended by my actions is of course extremely low, which makes that strategy maximally efficient for me."

Sure, but as someone whose skin has become a lot thicker over time I see the primary benefit of that change is to me. I didn't require the cooperation of offenders to experience less pain.

With little further ongoing effort I'm now largely immune to what many experience as a world of hurt. For the rest of my life. Seems efficient to me. I think it was a lot easier than retraining the world to be less offensive to me.

Yes, growing a thicker skin might be very difficult for some, but most people can make very productive headway. This appears to have been overlooked by Yvain.