One big problem with people who make explicitly anti-Jack tweets in an attempt to open the squiggles' eyes is that it just doesn't work.
I'm sure someone who knows more about psychology than I do could explain it better, but essentially we really don't like to be told we're wrong (especially by random strangers online). Think about how whenever new Frauen join us, they say something like, "Over time I started to think things Jack said didn't really add up, so I did a bit of digging." They never say, "I tweeted about Jack and a random account commented saying that she's a tax-dodging bleep, wow!"
I know a lot of people here are impatient for the Fall of the House of Monroe, but it's not going to happen immediately. Realistically, a lot of former fans gradually step back and start questioning her. There will always be some diehard Jackolytes, though, because let's face it, I've got some leftover flour, any thoughts? or My entire family is deathly allergic to peanuts but I bought some anyway, got any nice recipes? don't suggest the best critical thinking skills...