there's a lot of people in there teens here, and i'm guessing they watch charmed because it's a world thats more magical than our own, and they feel that's what it means to be a witch, so the spells must therefore be real?
i've never watched charmed, never interested me, i've seen a couple shows/movies involving witchcraft, they tend to upset me to some degree, there's only two i actually like and of those, one i would recommend with a warning of 'you can't bring people back from the dead nor jump off the roof and float slowly down.' i would add the blowing on a candle to light it and have a spoon continue to stir your tea, but i want those to be real lol.
overall, just ignore it, if someone asks about a spell, you can explain [nicely] why it won't work, or vote down the spells that have been added that are fluffy. after that, hope people are smart enough to ask themselves 'does this sound like something that would work.'