Scaling, MacOS has no actual scaling it will only lower the resolution, and using Retina on anything that isn’t sold in an Apple store (and even then) just simply does not work. It essentially has no HiDPI support past using native resolution with slightly larger text that is not adhered to by most of the operating system itself. I am at a loss at why you think this is well handled, what criteria are you using?
Most high volume printing (like shipping labels) is done with thermal printers where the heat turns chemicals on the paper black. These chemicals usually can withstand water but not alcohol so spraying with pure alcohol and wiping off usually will blank the paper entirely.