Now that I reflect on it, PETA has many campaigns where they 'attack' but don't really offer alternative suggestions. I think offering an alternative suggestion make a key difference, like your observation of others reaction to Tofutti bars was.
My post the the OP of the thread referenced was "What can PETA change in their approach so you wouldn't think they were nutcases, but you would
still pay attention to their message?" Unfortunately, the thread was locked shortly after, so who knows if the OP would have responded or considered the question.
You suggest a different approach.
Maybe what PETA needs to do is combine the two types of campaigns in one. A graphic awareness campaign along with an alternative 'what you can do' campaign. Chicken campaign: Show & tell how awfully the chickens are treated, (Gene and Lorri Bauston of Farm Sanctuary say that chickens are treated the most horrendously of the barnyard animals.) BUT offer a list of chix alternatives to chicken. Maybe even try to get one of the manufacturer's of these products to offer special coupons for those who have heard the PETA message. (Thanks to a recent Boca thread, I tried the chix patties & they are very good! Yves has a really good chix pattie too.)
Fur campaign: Show & tell the cruelty of fur, (has anyone here seen Tribe of Heart's "Witness"? Very good, not overly graphic, but incredibly moving!) BUT offer fur alternatives. There are lots of fake fur/leather clothing out there & there are some wonderful fake fur/fake leather fabrics by bulk.
I think you have to shock them to get their attention,
but then you have to offer an alternative. Just shocking them without an alternative resource leaves them feeling impotent. "I don't want to support this cruelty, but what alternative do I have?" (Granted, most of us were willing to eliminate "previous desirable thing" from our lives without an alternative, but hey, whatever helps the cause, huh?)
A site worth checking out:
http://www.tribeofheart.org/---
on edit: added emphasis with BOLD