The aspect ratio is correct on all screenshots and are accurate de-interlaced representations of a 640x400/512 workbench setup, even though these particular screenshots are in RTG dimensions. Starting with ECS, the Amiga was also capable of true non-interlaced 640x400 output (and even 480 vertical lines unless I misremember) in what was commonly called "productivity mode", limited to 4 colors (2 bitplanes).
Interlaced workbench setups weren't uncommon. I ran such on and off for years for certain productivity stuff where I wanted more screen real estate, until I decided to spend money on a flicker-fixer.
> The aspect ratio is correct
Yes it is, was my post unclear? Following your suggestion that someone might contribute a screenshot of 1.x, which I agree would be a nice addition, I'm suggesting a "HiRes" screenshot of 2.x or 3.x would be a better representation of how it looked in-period to the vast majority of users. The point is just that the icons, text, and general UI chrome were designed for that lower vertical resolution.
I ran the interlaced modes later after buying a flicker-fixer, but didn't know of anyone who used them without one - the flicker meant those interlaced modes weren't generally considered to be very usable.