We don't have many rules here, but the golden rule applies not just to other writers, but to others in general, in my humble opinion anyway.
And for the record, no, I don't think that making snarky comments about other people's appearance is acceptable. It's disrespectful and petty.
And for the record, no, I don't think that making snarky comments about other people's appearance is acceptable. It's disrespectful and petty.