I agree that websites should be printable. I'm a fan of RSS and eInk displays (Kindles, and when I can afford one, a PC monitor), and printable websites would make using them on paper-like displays easier.

I've been using the PrintFriendly [1] browser extension for years (to print otherwise unprintable websites), but it gotten worse, so while looking at alternatives I started with The Printliminator [2] (which uses the Haartija CSS framework [3]) and have currently ended up using CopyAsMarkdown [4] (with Pandoc) and WebToEpub [5]

[1] https://www.printfriendly.com/ [2] https://github.com/CSS-Tricks/The-Printliminator [3] https://github.com/vladocar/Hartija---CSS-Print-Framework [4] https://github.com/yorkxin/copy-as-markdown/ [5] https://github.com/dteviot/WebToEpub