Frankly, it would have taken just one thing - remove references to Facebook. I know that's basically amounting to doing some linguistic gymnastics in order to express what your extension does, but you _did_ in fact use a trademark without their consent, and ostensibly in a way that reduces their revenue stream. This really isn't a Graffino v Google issue.
Expecting "due process" is also an unrealistic complaint in this scenario.
> I just want you to think twice before creating a revenue stream based on the Chrome Web Store.
Forget the Chrome Web Store. Think twice before creating a revenue stream based on any service that can pull out the rug at any moment. If you don't control your own destiny things like this can and will happen.