Sounds like a childish rant instead of a review.
Even you say he is a great prop maker.
Just some advice, Commissioners can choice what materials they use. Anything they make reflects them and their reputation. I just don't understand if someone says they won't use certain materials, that you would continue to inquire quotes for commissions or feel the need to badmouth them. As for actually listing the person's real name, it sounds like you have a personal vendetta against him. I only say this since you haven't actually posted anything about hiring this person for a prop or cosplay.
Message me for Photoshoot scheduling and information for any con I am attending.