I have seen photo's of and heard descriptions of plant troubles. I've even reduced light levels on some of my own plants and experienced those same troubles myself.
CP and even Pinguicula need as much PAR light as they can get without cooking them. Just like any other plant. Just because a plant can survive, and even bloom doesn't necessarily indicate that they are receiving the optimum amount of PAR light.
Don't get me wrong, they can be grown in less than optimum conditions, and quite successfully too. But if they are grown in less than optimum light you will need to more carefully balance their other environmental factors (especially temperature and moisture) in order to keep them from being overcome by advantitious and pathogenic organisms, which would normally be supressed by a higher level of light. And if photo's you've seen show them with colorful, uniquely patterned leaves -- too little light and you can kiss any hope of seeing these colors and patterns of leaves, though your plant may grow just fine and bloom even better than ones with the colorful leaves.