I think campaigning for decent infrastructure and debunking myths at the same time is a good idea. I'm not promoting the use of shit lanes. Promoting safer junctions is probably the best way to make things actually safer, but I don't think it'll promote cycling in a meaningful way.
This is tricky, if you're promoting cycle lanes, why is it important to disavow people of notions like:
they're all RLJers, roads were built for cars, they should stay far left, cyclists ruin travel times etc.
If people hold these beliefs then they probably believe that cyclists should be off the road and on cycle paths.