This is a nice way iOS Safari behaves the moment you tap one of the font size buttons – it immediately ejects all the other chrome:

After Liquid Glass specifically, we seem to be going through an interesting re-evaluation of whether “the content is the king; it should feel expansive and UI should get out of the way at all costs,” so seductive as a principle, is ultimately the right approach. Liquid Glass-sporting operating systems have so many contrast and blending and distraction issues that I wonder if they alone are radicalizing people, making them appreciate traditional rigid toolbars with solid backgrounds and fortified borders.

But here? Here letting contents shine and putting the UI atop feels like the absolutely right thing to do, since you are redesigning your reading experience.

Contrast this with Books:

It’s not even that the crossfaded transitions feel awkward. It’s mostly that the interface takes up so much room that the content preview slice becomes almost claustrophobic. And it’s even weirder when you tap the Customize button, and whatever was visible gets inexplicably replaced by a pop-up with… largely the same content anyway.

How will the entire page feel? For that you have to use your imagination – or keep tapping back and forth.