Instead of having your windows float around, they perfectly snap and fill the space of the monitor depending on how many windows you have open. A new DE in alpha right now called Cosmic has both floating windows and tiling, you can change with just a toggle.
"Being forced to work tiled" that's the main feature of a tiling wm though...
If you tried it for a while, you'd realize just how annoying floating windows really are. All that manual positioning, focus issues, getting them stuck or hidden behind other windows, etc. For big monitors, I would say tiling is just flat superior to floating windows managers.
I'm sorry, can you clarify what you wrote? I read it but then got distracted by my cursor moving on its own while I was reading an article about xzutils. Perhaps I should read it again since it made no sense the first time.
I think Gentoo with no binaries should be the new archlinux. I've literally used archlinux virtually unchanged outside of updates for years now. It's been trouble free outside of some minor bugs and I change my settings in the kde settings panel 90% of the time.