"90%"? Where did this imaginary number come up? The people who support Classic are a minority.
Okay maybe not 90%, but it's definitely not a minority either. Probably at-least 50%
Labeling Bitcoin Classic / XT / Unlimited as "altcoins" is highly disingenuous. As the Core devs have proven, centralization of the development team can be an extremely negative development, especially when their investors have ulterior motives.
We need competing implementations for the health & future of bitcoin.
Centralizing all the power into the hands of one group of people never works well. A cursory glance at history is all it takes to prove this.