No, you're not mistaken, that is where the demo ends. Any other comments you've seen are in relation to the old game demo, currently both my games are going through a "re-write" so the demos are much shorter now.
The A.B.O demo will progress to add the formentioned game features that you're interested in. However, both of my game projects are simply passion projects, I make little to no money from either of them.
I also have many outside factors in my day to day life that affect the progression of my writing. So, I do as much as I can when I can when writing and coding each game. It's slow and I wish I had both the time and willpower to do more, but life is relentless and I still power through, so it's better than nothing.