DT has many videos on tiling window managers, but I was able to find the exact video.
The boss himself. 
That’s it. Thanks!
To DT’s and @shybry747 point, I should probably update this article and change the title to better suit the workspace management focus more than tiling; which is more like a bonus feature, rather than the main draw:
Something like:
Linux: We Need Workspace-Centric Desktop Environments, Not Just Tiling
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Not that I found but I didn’t explore it much for tiling or anything like that.