Scwm had animations, which went in sometime before the ~2001 Usenix paper, due to a need for them. I don't think there's anything out of place about needful animations.
1. You can't pick and choose your monitor like this on laptops.
2. I like my "window/s of interest" (the current "task") to be front and centre; I would like my window management when task switching both to do this for me and to set the previous current task aside for me. It seems to me this would require some kind of undiscovered paradigm that isn't tiling or stacking. Ultrawide is just forcing me to direct my attention to a specific off-centre region for extended periods. This feels like holding breath, except psychological - I can only take it so long, then my eyes, by themselves, are going to look at other areas, whether I like it or not. Which is also one reason why tiling is an absolute non-starter for me.
I've been seeing people, never ones who were actually there, make this claim in the last five to ten years. Rc was on tenth edition Unix. I've seen no evidence that it originated on Unix. The manual calls it the Plan 9 shell.
So rc was made for Plan 9. The examples in that paper are definitely on tenth edition Unix, I think this would be because
A fairly complete version of Plan 9 was built in 1987 and 1988, but development was abandoned. In May of 1989 work was begun on a completely new system