Haven't read it all, but I do feel that this person will have a very different understanding of what it's like to be a parent. And possibly will miss out on the character-building effects of being chronically sleep-deprived, isolated, desperate and having to muster up your last ounce of weary strength to sing a stupid song, play a stupid game, do something mindless, repetitive, disgusting or boring because there is simply no way out. She probably won't be a stronger, wiser person at the end of it IYSWIM.
But if we're going by that criterion, then all the mothers who have babies who easily breastfed or who fell into a routine by themselves, or who happily slept in prams while they did the shopping, or who didn't hate the sound of traffic etc etc... in other words everyone who did it easier than me would be 'missing out'... And I certainly wouldn't recommend my experience to anyone.
And if we start playing that game, then anyone here with an NT child is missing out because it has all been too easy. And anyone with a healthy spouse, or any spouse at all, or no serious financial worries etc etc has been missing out.
I don't think you can play this game and win.
Actually, I think I would win it, because when I were young, we lived in a cardboard box in the middle of the motorway, left for work half an hour before we got home at night, and our father beat us with a broken bottle every night... if we were lucky....