Good tactic or off track?

I direct you to this piece (via "News of the Weird") from Vacaville, Calif., about residents that tape customers entering an adult shop with the intent of placing them on YouTube.

The pastor of a local church had an interesting viewpoint:

"I'm not trying to embarrass anybody," [Jeremy] White said. "If you have absolutely no question of conscience about entering this store, then by all means shop
away. However, if even only one of the dozens of customers we've deterred from
entering is a married person about to do something shady behind their spouse's
back then - mission accomplished."

Setting aside possible privacy issues, does anyone else think this is a misguided way to accomplish a goal of informing people about the damage of pornography? It appears to me that blugeoning someone to accept your point of view is not effective.