No one likes using her really. I just rubbed off on some of the OTL people that's all (I'm pretty sure I'm the cause of the numerous pocket Zeldas creeping up). But in reality, nobody uses her in the smash world x_x. If they did, she'd have more rep and perhaps be higher on the tier list due to better representation and thus, better tournament results.
Zelda is a simple character. Someone who is requires no technical skill at all. And contrary to popular belief, her attacks are pretty good, albeit most have severe cooldown (I said cooldown instead of lag, because lag makes it sound as though her attacks have slow startup, which they don't; only her fsmash/tilt/jab/grab have 10+ frames of startup tbh), so naturally her attacks can be easily utilized.
She's not a terrible character when you think about it, but she doesn't make it far enough in the competitive smash scene to be considered good, so meh, to everyone (including myself), she's a bad character.