So the advantage of Wordpress isn't anything you could find by looking at Wordpress itself... it's the popularity and huge amount of support that brings? Makes sense.
So the "next Wordpress" won't be able to be the next Wordpress until it's popular. It'll have to be good for other reasons until then.
Yes. People who say they are creating a Wordpress replacement need to make clear what they understand Wordpress to be and what exactly they are replacing.
Well it'll definitely have to be self-hosted and open source. It's a nonstarter to have to work in a particular ecosystem off the bat for me. I don't know what setup I'll want to be running in 10 years.
So the "next Wordpress" won't be able to be the next Wordpress until it's popular. It'll have to be good for other reasons until then.