It is not in our interest to force John to produce content that complies with our criticisms. It would be in our interest to sincerely provide him with said criticism and allow him to reflect on it and decide for himself whether he possesses a new perspective by which his art could then reflect, or not.
A quick update. Derpygrooves have taken the petition down issued an apology to JJ and released the following statement:
Derpibooru costs over $25 a day to operate - help support us financially!