is that still true today?
It's not a "true/not true" question: its a case of
how many customers require bootcamp/parallels/vmware as an essential feature. I'm sure that number is rapidly declining, since we seem to have passed "peak Windows".
The Mac games scene is now far better than it was (especially with support from Steam) and while those games might not all transfer to ARM, Apple now has a major gaming platform in iOS, which might well run on an ARM-based Mac. Plus, as you say, Mac hardware is already unattractive for serious gaming.
Then, at least outside the corporate realm, the days where you couldn't get far on the web without hitting an Internet Explorer-only site are rapidly receding.
Mac support on corporate networks is also vastly better than in the past - for various reasons such as the demise of Novell, better OS X support for Windows file sharing/email, the move to web-based services and the demand for iOS and Mac laptop support.
So, lots of the "mass market" reasons for needing Windows on the Mac have greatly diminished. That really leaves people who need to run specific bits of substantial windows-only software, or developers needing to test on Windows/IE.
I think a conceivable medium-term possibility is a Mac range where "pro" means "Intel" and "Air" means ARM. That would probably make a nice, clear marketing distinction, with the ability to run bootcamp/virtualisation, or heavy-duty third party software like Adobe CS, versus size, weight, heat and battery life as the big difference.