Well, it's just personal preference, like how I don't love skinny jeans. I get that some styles of boots aren't supposed to be tight on the calf or some look good when they are wide. I wouldn't personally ever wear them, but sometimes other people can pull them off. But hers are really wide. I could stick both my hands down there at the same time! IDK, they just look sort of ill-fitting and too big for her.
I kind of get what she was going for with the chunky cardigan on top and the chunky boots on the bottom, but the execution doesn't quite work here IMO.