Linux on the desktop and Linux on the laptop (heh) has definitely improved. It _sometimes_ needs a little tweaking to get it right, but KDE/Plasma also happens to offer that level of "tweakability" that should satisfy almost all semi-mainstream users (at least anyone coming from Windows or Mac).
Compared to my first Linux laptop (a Sony Vaio circa 2000), my current XPS 13 works as well as any Mac laptop I have ever owned, and all the hardware that you would "expect" to work (but probably didn't work as smoothly 10 or 20 years ago) Just Works (WiFi, external displays, excellent battery life/sleep, etc...)
Based on the complaints I have heard about Apple hardware and MacOS over the past few years, I'd even argue that Linux-on-the-desktop isn't any less stable or harder to get working than a Mac.
Compared to my first Linux laptop (a Sony Vaio circa 2000), my current XPS 13 works as well as any Mac laptop I have ever owned, and all the hardware that you would "expect" to work (but probably didn't work as smoothly 10 or 20 years ago) Just Works (WiFi, external displays, excellent battery life/sleep, etc...)
Based on the complaints I have heard about Apple hardware and MacOS over the past few years, I'd even argue that Linux-on-the-desktop isn't any less stable or harder to get working than a Mac.