Definitely very subjective. People keep saying macOS has amazing font rendering but for me it just looks like a blurry mess, especially on non-retina displays. My fonts are set to be as sharp as possible on Linux because when coding and in the terminal I want very sharp fonts so they’re easier to read for me.
Seconding the dependence on the particular font as well. Cantarell, Ubuntu and OpenSans are all fairly blurry regardless, unless seen on HiDPI screens in which case they do look more like macOS. DejaVu Sans can be very sharp in contrast at very low resolutions because it’s been made in the 800x600 and 1024x768 days and optimized to look sharp when small.