Telling somebody that their artwork looks like it was drawn "by a 5 year old" is not a critique. It's an insult.

Telling somebody that they need to work on their anatomy without giving them any direction to go in to improve is not a critique. That is vague and unhelpful and frustrating.

Telling somebody that their style is simplistic and implying that that's a bad thing is not a critique. That is rude.

Telling somebody that their style is bad and should look more like this style over here is not a critique. That is like telling Burger King you hate their food and that they should make their food more like McDonald's. Just go to fucking McDonald's, you idiot.

You have no business giving anybody "critique" if this is how you think it works.

There is a difference between "style" and "undeveloped skill being called a style". There is a difference between "stylized anatomy" and "poor anatomy". There is such a thing as making an artistic choice and bending reality to improve the look of a piece; i.e. neglecting to place a shadow as dark as it should be because it obscures something you feel is important, etc..

If you can't identify the difference between a mistake and an artistic choice, a style and poor skill, and stylized anatomy vs poor anatomy, then you have zero business giving critique.

The end. Go home.