I think the largest misconception is what their natural habitat is like. It isn't the dark floor of a tropical rainforest, it is near the equator, yes, where the sun come closest to the earth. Though they don't usually grow in direct sun, they get very good light and the photoperiod changes just a little, from winter to summer.
Many may have noticed that they can tolerate, for a while, very low light levels, but they certainly are not growing to their full potential without light levels that will engender robust, vigorous growth.
CPsInAtl -- that smallest leaf is now showing more destinct characteristics of Pinguicula 'Titan', as it grows in my own collection.