I may have really good vision then because I can tell the difference between 163ppi and 218ppi on a 27" display from where I sit at a desk. 218ppi looks nicer and is equivalent to what I'm used to when using my MacBook Air.I have mentioned this many times to people here who dismiss it, but I may as well try once again. At 27" 4k resolution vs 5k is imperceptible at any distance further than 21". So unless you are sitting abnormally close to a display, the raw resolution makes no difference. Now, how the scaling to that resolution is handled may make a difference, but with proper scaling, they will be indistinguishable unless you sit very close or have exceptional vision. As far as working well with a Mac, that is the wonderful world of Apple lock in. Apple is the reason why Macs do not work well with monitors.
Also, I do not agree with the "just move on" sentiment. I do not think we should let Apple off the hook when they are overcharging for a 6 year old panel.
The third party monitor world also uses the same drab matte displays that remind of the mid-to-late 2000's and are mostly made of cheap creaky plastic. This is the exact display people have been asking for the past 6 years and Apple finally delivered it.