I'd have to agree. I'm 5'3 and have an hourglass figure (bigger hips and chest) and side pants make me look wider than I really am. Maybe on slimmer and less curvy short girls it would look better, but I know I can't pull it off
I do wear them but I'm very selective as to the width of the flare.
Too wide and I look like a stump. But I love my 7FAMK jojo jeans.
I get the petite version (Lexie) and pair the jeans with very fitted blazers or cardigans.
If you do wear wide leg pants, make sure that the pants fit you nicely in the hips and thighs. If you are wearing distressed jeans, try to get a petite version so that the distressing' hits right at the knees and not your ankles!
I think that it depends more on your leg length vs. your height. I'm short, but I have long legs for my height, so I'm okay in wide-leg pants. One of my good friends is short with short legs and a long torso, so she has to stay away from wide pants, tall boots, etc.