Probably 90-95% of Macs sold come with a monitor, and they're all high-DPI now. Apple doesn't really care about optimizing for some giant 1080p monitor. An iMac is pretty cheap.
In my world, Macbooks are pretty popular in the corporate world. Sure my MBP 16" has a high DPI built-in display but I'm never going to get the budget for an Apple Studio Display. Offices are equipped with Dell/Lenovo/HP USB-C monitors that are between 100 and 150 dpi. I'm not talking about 20 year old pixel density here, but modern ultra-wide or UHD monitors.
There's a difference between not caring about low DPI anymore, and crippling font rendering on purpose.
> I'm not talking about 20 year old pixel density here, but modern ultra-wide or UHD monitors
Because the monitor industry largely got to 4K and said "eh that'll do", a lot of those "ultrawide" and UHD displays with large sizes literally do have twenty year old DPI.
Increasing physical panel size (usually) used to translate to higher resolution, but at some point the majority of manufacturers stopped doing this, so you get the same 4K resolution at ever stretched physical sizes, and ever decreasing DPI.
