Yeah, I've read that too, pretty much the standard advice
I actually feed mine once a month or so with aquarium water. And you're not supposed to do that either since they supposedly loose their traps and grow ordinary leaves instead. But it brings out the red in the trap and greens them up as well. They can actually uptake nutrients through their roots.
There are three plants in the pot and they've all flowered before a couple of time and none of the plants showed the slightest health issues. They are also supposed to have a rest period over the winter, but I've found that's not necessary either. The key is light, mine is under a light 12 hours a day 365 days a year and it's fine. Well so far, at least
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