My understanding of the new surgical trend for penile implants is that it's one of those things, like Viagra, that was developed for older men with ED, and it's now become fashionable for younger men in the porn industry.
For a man with chronic ED, fair enough. A healthy young man having it done? I suppose it's up to him whether the economic incentives outweigh never having a natural erection for the rest of his life. I can't think of many things less erotic than pushing a button to pump up your cock.
But that's at least working with an actual penis, and we forget what an amazing organ it is. The idea that you can replicate it with some combination of female body tissue plus nuts and bolts is bizarre.
I think one of the things that got Lord Winston concerned about this issue was transpeople having completely unrealistic ideas of what surgery could do for them. There are people profiting from this extreme body modification that don't really have an interest in them having a realistic idea.