Tilings are no better or no worse than floating. There are many users who would benefit from them (people who typically keep all their windows maximized), but have had literally zero exposure two them due to MacOS and Windows.

Complaints about lack of window snapping in MacOS vs Windows, a loose copy of tiling, are consistent across the internet. If MacOS and Windows had native tiling support, you'd see a fight fiercer than tabs vs. spaces.

The reason floating windows are used is because "that's the way it is done." Windows 95 wowed the world and established the status quo.

Not to mention the direction that the likes of Paper and Niri are going, these are things that very few users get to experience and therefore couldn't possibly have an informed decision on what they prefer.