You buy what you need I think. I have several displays, all of which cost me well over 2000. Then I’m a professional photographer so the display is the most important thing after my shooting equipment.I bought a Late 2014 iMac 27 for $500 a few months ago. Fabulous system and it does a ton of work for me. The CPU is 1/2 and M1 but it gets the job done and I love the speakers, display, etc. It's hard to spend $1,600 for a display when I got a nice display and a computer for one-third. The people that will buy and use these are in rarefied air.
I think judging someone else for what they need when you know literally nothing but your own opinion on the matter is a bit of a fools errand.