Oh, you're right. I remember hearing that when it came out. I thought I'd looked through all the iFixit teardowns writing my post but missed the Laptop 3 one. They score it a 5. The battery is still glued down, though.

Maybe they've made changes for the Book 3, but I would think they'd say something if they had. According to The Verge, it's the same design.

I hope they continue to make those changes. To your first point, I find it ridiculous when companies make devices with very little ability to repair.