How about desk space? The author says he's replacing his existing 27-inch monitor. If you look at the final photo in the article, I don't believe he could fit a 32-inch monitor in the same place and keep his existing desk layout the same.
A lot of us don’t like such massive screens. For me 27” is ideal.
Yes. I ordered a $5K Mac Studio for parallel Haskell computing, but not the monitor.
I would not want a low resolution (4K) 32" screen. Text would be less sharp. If you could find a 32" 6K for a reasonable price that would be sweet. If you are watching videos or playing games, resolution is not significant, but if you are working with text, resolution is more important than absolute size or refresh rate.
The only 32 inch monitor at >200 dpi in the market is the Pro Display XDR. All other are 4K (138 dpi).
HiDPI. If you want HiDPI in a 32" display, Apple has the Pro Display XDR for $5000, but that is quite an expensive display.