You may be right that bluetooth now works out of the box on Linux, but that certainly wasn't the case a year or two ago. And I know for a fact that touchscreens are still hit and miss. I don't know what improvements have been made to the Network Manager, but I suspect it's still pretty bare-bones.

It's possible that things have changed drastically very recently, but I suspect the Linux situation is still mostly the same as before: it's great for web servers, but frustrating - bordering on unusable - for regular users.