Good news - today I see evidence that they have heard the many requests for tabs or links at the top of the individual plugin pages. Some, but not all, of the old sections now have links at the top so you can jump right to where you want to be.

On a couple of plugins that I've checked, I'm seeing Details, Reviews, Installation, Support, and Development. But I'm missing FAQ, Screenshots, and, importantly, Changelog. Hopefully these will also show up soon!

The Trac ticket referenced in https://wptavern.com/new-userscript-restores-tabs-to-the-wordpress-plugin-directory was just closed: https://meta.trac.wordpress.org/ticket/2278