I spent a very long time getting high-res screenshots of Pages on Lion and Catalina with a non-Retina laptop, and also pulling quotes out of videos. Please do not make me regret it. https://pxlnv.com/blog/window-chrome-of-our-discontent/
The Window Chrome of Our Discontent

In a WWDC 2011 session, Dan Schimpf explained some of the goals of the refreshed design for Aqua in Mac OS X Lion were “meant to focus the user attention on the active window content”. This sentiment was echoed by John Siracusa in his review of Lion for Ars Technica: Apple says that its goal […]

@nickheer God, this made me mad.

I *do* think the prescription is rolling back to a decade-old design language. I recognize that it was imperfect—you make a good point about the smaller mouse targets of the elements that wind up in the formatting sidebar in later versions—but for me personally, I'm very willing to make that tradeoff.

@jwisser @nickheer I was just going to say this. The fact that older versions aren't as "slick" or as pretty in screenshots doesn't mean they are worse UI (though I think even that is debatable as I personally think they look better in screenshots)

People have a hard time with going back because they think it will make software look old. But unless you can actually articulate what better might look like I don't think there is any real choice but to go back to designs that clearly worked.

@amonduin I didn’t call anything “slick” and I argued some of the functional trade-offs.
@nickheer sorry for being unclear, I wasn’t trying to accuse you of calling it slick, just that generally people seem to feel that going back would be to something less slick or modern