The reality is that JWs simply are not *that* extreme. Of course it is possible to highlight a number of issues but you don't go to a meeting and hear outrageous hate speech, violent oppression of people, highly visible sexism and so on. To most people Witnesses are essentially a slightly odd but harmless religion. Most people are happy to allow Witnesses to exercise their freedom to worship as they see fit.
Even the child abuse issues are not enough to cause a major upset, after all many organisations have historic child abuse issues and it's certainly not something that is endemic within the organisation or intrinsic to a Witness way of life.
The protesters therefore are as irrelevant to the masses as the Witnesses themselves, if not more so since small scale protests and disruption can easily be assumed to be the work of those with a chip on their shoulder, a petty axe to grind.
I respect everyone's right to work out their opposition to the WTS in whatever way they see fit just so long as it legal however there direct activism such as this has, as far as I can tell, a zero percent success rate in changing anyone's mind.
The mass media will only be interested in the WTS if a serious scandal comes to light. The most productive method of getting people to stop being Witnesses is through the internet and having material out there that the questioning person comes across and that strikes a chord with them.