Actually, it's started declining when Poof was introduced. A few episodes later, Sparky was introduced which declined even further. And then as you just said about Chloe appearing, it declined still. Now since it resorted to Flash, it became merely unwatchable which goes to say that the new episodes are under month-long hiatuses.
Basically, all he does is introduce new characters to keep the show going. I wouldn't even be surprised if Butch introduces a new character who is a fairy god cat to appeal to Chloe's envy if Sparky isn't enough to appeal for both of them. And then "what do you fucking know", Nickelodeon is making another cartoon whose main characters include a dog and a cat.
Sadly predictable to say the least desu.>>98437669>it's canned
Don't count on it on your fucking life; that is what they want you to think. Long-running shows nowadays function like Duracell battery and it's going to take far more than mere propaganda from Buzzfeed-tier sources to confirm that it really is going to die.