BL proportions

I was scrolling through Reddit (I think at r/Omniscient reader) where someone posted a screenshot of Red Candy. Then people just ripped it all apart saying how insane "BL proportions" are.

As someone who personally enjoyed Red Candy I was surprised. But I'm a non-artist so honestly I wouldn't know. I would to ask if the criticism is valid and I just hold Red Candy up too high in my list?