I don’t think the inclusivity is the most interesting part of this interview - rather:
I wanted the show to be fun and a bit nuts. I think there’s an awful lot of television now, and I watch an awful lot of television, but I think there’s so much television that [sticks too rigidly] to the three-act structure. You know when there are 10 minutes left to go, when there’s going to be a major event, or when the murderer is going to be caught. So, I think it’s time for a show just to break those rules. Writing is about the heart and the pulse and sparks in the brain. Writing is about psychology. It’s about understanding people and why they do what they do. It’s not about hitting a particular beat 17 minutes in. So, I wanted to show this kind of laughing in the face of those rules.
I Think he just means “why not throw a song-and-dance number in, rather than the conventional twist of 'ah ha! You thought I was defeated but I.live to fight another day, probably popping up throughout the series then returning for the finale” rather than throwing all structure out of the window.
And even then, they snuck Maestro’s kid into the dance number.
There’s always a twist at the end.