With Linux it's not only that I could change everything (system font, acceleration of the mouse pointer etc), but I literally HAD to do it. First days after buying new laptop and installing Linux I had to spend of configuring everything – from mouse pointers to Google calendar integration, often with obscure command line or config setups.
That was fun.
Until I bought first Macbook Air and discovered that I don't need to reconfigure everything anymore. Touchpad had just perfect speed/acceleration of the pointer. Mail/calendar/contacts was syncing out of the box. Fonts were awesome. Screens and external montiors just worked. Wifi just worked. Hybernation/sleep just worked.
So this is true on Linux you can configure way more than on MacOS. But the reason behind it is what keeping me with Macbooks all these years.