If it were not acceptable to rate a variant as poor, the rating would not be available. Also, if only flattering things were said about a variant, that might look like the consensus. How is someone supposed to assert that they have read the page and previous complimentary coments and does not agree with them?
I can see what Hubert means, the two pieces are not very memorable. If 'Hawks sweep in from a distance and attack prey at their feet. They also hop forwards further than they do backwards. Elephants charge forwards and have two tusks which point left and right of their next step. They also have an L shaped trunk.' is supposed to be a mnemonic, it does not work as one. It would take a lot of practice to get used to these pieces.