For many players, there's no clear delineation. They want to have fun, but they also believe their systems and techniques can cut into or beat the house edge.
Again from the same thread over there, this is a top administrator, afaik ranking just below Queen Sonya:
That's a low opinion of the other posters. If you pressed me, I would have to admit that a few message board denizens are habitual liars. But usually it's just a matter of selective presentation. There's peer pressure to keep it happy.
And I see yet another mention of quitting when ahead. But your timing must be precise. You have to quit correctly.