This myth needs to die a quick and painful death.
I've done it. I'm not proud of that. And there are times I've ejaculated, and I've done everything I can to make it seem like I enjoyed it more than I really did. Sometimes I've faked myself out into thinking I really had one. It's possible to ejaculate and not have that moment. Or not to have much of a sensation other than, "Okay, that felt nice," and then sell it as being a mindblowing event.
I'm guessing a lot of guys have just never had a genuinely mindblowing one, so they just don't know. Or something.
As far as a pushbutton orgasm goes...I dunno, getting things implanted in your spine seems a little more extreme than
a Magic Wand.
(y'know, I probably shouldn't post this under my real name, but what the hay.)