"Why does Ryder say 'PAW Patrol is on a roll' fifty times every episode?"

Well, this question is sort of easy. Ryder has Obsessive Compulsive Disorder. (Or OCD.) If he didn't have a routine, he will get easily overwhelmed. To keep a routine; each dog has a specific job, each dog has one or two catchphrases, and he has his own catchphrase. His OCD also interferes with his Anorexia. If he is content, he's most likely to eat. If he's overwhelmed he's obviously not going to eat until everything's the way he wants it.