linuxmemes

That's categorically untrue. As long as you stick with well supported, mainstream distributions, most things just work. Given the vast diversity of window managers, init systems, boot loaders, desktop environments, package managers, graphical interface systems, audio systems, and so on... it's surprising how well things do just generally work in most cases.

Gee, I must have imagined writing a novel on a laptop running Linux, with nothing giving any trouble at all.

I guess my imagination is even better than I thought!

Sadly,, that means that the second novel I'm halfway through must be imaginary too. A shame to have imagined that much imagining.

Seriously, that's just this laptop, it doesn't count the ones on desktop before that, also on Linux.

That's how it's supposed to be! The only question is whether the brokenness has a documented method to neutralize it, and you could help with that by publicly posting about any issues you have.