> That’s not the correct solution. The correct solution is for the monitor manufacturer to stop reporting an EDID that identifies their monitor as a TV (and thereby forces the OS to default to YUV rather than SRGB.)

Is this an EDID issue? OP didn't specify what the "non Mac monitor" is, but I'd expect it to be a lower DPI one. I get the blurry text on an Apple Thunderbolt Display, too.

I think this is related to the removal of sub-pixel antialiasing in Mac OS a few versions back.