True, but lunatics are also thought to be lunatics, and they heavily outnumber the inspired. If someone has moonbat ideas it is generally safest to start from the viewpoint that they are probably truly a moonbat and then go from there.
To overcome prejudice the genuinely inspired man needs to bring evidence and secure reasoning to the table. If he does this it is surprising how fast science adopts new ideas even when they overturn cherished preconceptions (which is science's strength and its weakness). Religion is largely impervious to ideas that overturn cherished preconceptions (which is also religion's strength and its weakness).
I would have to argue that the ground that devout men and women have gained in the understanding of the laws of nature, bringing incalculable benefits to mankind, basically renders this comment absurd. But, like all absurd comments, it enjoys a certain following.