[Apreche]

In the replies people are talking about current issues regarding scaling and high dpi displays.

That has little to do with it. Apple has had vastly superior font rendering since the day OSX launched, and have been in first place ever since. There's no point in my memory of the past 20+ years this was not the case regardless of display technology.

Even though other systems implement a lot of the same techniques of sup-pixel rendering, fractional scaling, etc. the results speak for themselves. With the same monitors, the same display cables, the same fonts, and the same applications, text rendered by Apple operating systems is more crisp, clean, readable, and pleasing to the eye. Configuring settings on Linux improves the situation, but no configuration gets close to the quality Apple delivers by default. Apple is also superior to Windows in this regard, but the margin is much smaller.

This is coming from a person who maintains a long list of MacOS gripes because of all the things they do wrong. Font rendering is one of the few things they have consistently done better than everyone else.