I actually kind of like that the stock UI is just web pages, and you click things, and the things you click take you to new pages.* I may be in the minority in this, but I don’t feel that everything needs to have a whole new UI that has to “boot up” while it loads its libraries, and then takes over the browser area with its own special little UI with all kinds of different scrolling behaviors for different columns, and little animations when you do things, and copying the URL from the browser doesn’t really work.
(* Some service worker fuckups aside)
I don’t love that visually, it looks like a circa-2005 student web page project, and it has “themes” which just change to a differently unappealing set of colors, but life is like that, it is fine.