Earlier quoted context omitted.
Or do what I do, express yourself like a human instead of a business machine, leave, go do the rejected right thing for a competitor, and send the product brochure to the people who cared more about their feelings than the work. You have to be willing to do a lot of walking away, but the inevitable "you were right" has been satisfying so far. Or I guess another way to say it is if you can, do, and if you can't, by al…
This is super passive aggressive, like a child saying "I'm leaving, you will miss me guys, you'll be sorry, you'll see I was right and I'll be the one laughting !". Besides, this assumes people rejecting your idea are bad, while they are just being humans. Humans are weak unefficient creatures, it's no use to take offense in it, we all are weaks in some areas.
But it is correct to take offense about people in position who command about things they are weak in.