You'll never know if someone has the guts to visit jwfacts or fact-check ARC at the privacy of their homes. Witnesses don't care if most people reject their kingdom message, they just go on, repeating lies that come directly from their GB. With all respect, why then should activists who tell the truth quit just because others don't see enough benefits compared to the costs?
You're right - individuals can do what they want and if someone feels that they want to interrupt a meeting then that's their prerogative just so long as they are peaceful about it.
My personal view is that if you are going to try and approach Witnesses directly then the best way is through the carts. That's where Witnesses expect to talk to members of the public and you are free to use any approach you like to introduce alternative reasoning points.
I think Kevin's cart work in reverse witnessing was far more potentially productive than starting a prayer in the hall and being out of there in 60 seconds.
Either way I would agree that his manner comes across quite well and he did make make smile.
I didn't mean to say that Derek O'Hare is nuts, just that I know people who know him and have experienced his activities and they think he is nuts - in other words, his actions have simply overwhelmed the valid points he has. His personal story is pretty tragic and he has every right to feel aggrieved - probably why that translates into the direct activism but I think his is the example that proves the point.