Scaling just works greatly as Apple implements it. Especially, if your screen has a 200ppi or larger. Trying to change the font sizes across all applications is

Scaling just works greatly as Apple implements it. Especially, if your screen has a 200ppi or larger. Trying to change the font sizes across all applications is a sysiphus task and eventually you end up with one, which doesn't behave greatly. Especially, if one of the applications is Linux running in a VM. I have a Dell 24" 4k - and for 4k at 2x, the screen should be about 22". But with macOS I can set it to a virtual resulution of 2300, which works great. On my 15" MB Pro, I usually use the 1680 resolution, but if needed, I can quickly change it to 1920.