I don't feel it does motivate many others, possibly the inquisitive few who would most probably do it anyway, since many simply refuse to believe it to be true and then there are those who do believe it but lack the wherewithal to achieve it.
It's like living in a small town and everyone there thinking they know all about your business and personal life when, in actual fact, they know nothing!
The funny thing is that I do actually live in a small market town of 18,000 population and the family name is extremely well-known. I left the family business 25 years ago yet mention my name and everyone thinks I own it and refuse to believe me when I tell them otherwise.
Are they prepared to believe I have an international bricks and mortar business in Brazil, China, India, Italy and a few other countries?
Why? Because their preconceived notions consider it's not possible for someone like me to do it, it's the impossible dream to them, something only someone else does...the ones they read about in the tabloids, that's their reality.
Anyone mention Big Brother? Yuck!
So no, let's keep all the naysayers happy and tell them it's not possible to earn a million with Adsense, then they'll have their doubts confirmed.