Here is what Taylor had to say about this:
"Is that going to be part of the series? That they’re graduating from being the sidekicks to being the front line heroes?
Taylor: No, it’s really not! It’s weird because I read so much Titans in the lead up to this, and everybody's different versions — from Wolfman and Perez, to Geoff Johns, to Judd Winnick’s, to Devin Grayson’s, and so often there's that there's that feeling of, 'Oh, we’re the sidekicks stepping up!' For once, I didn't want that. I wanted them to go, 'Yeah, it's our time.' Particularly for people like Nightwing. I mean, Beast Boy would think that anyway, but I wanted them to go, 'It’s our time. We’re not the sidekicks.' There’s no imposter syndrome.
In the end of Nightwing #100, he basically says, 'It's not time for the Justice League. It's time for the Titans,' and that's certainly how we feel going into this book. So it's not sidekicks and 'Are we good enough?' Yeah, they’re good enough."
https://www.thepopverse.com/dawn-of-...-interview-dcu