I'd rather stick to the license text (than rely on mental gymnastics to justify any interpretation based on a FAQ) to be upheld in the Court of Law.
Btw, note how MPLv2 FAQ page clearly points out that the FAQ doesn't give anyone a license to freely interpret the license itself:
> ...while this FAQ is intended to be accurate and helpful, it is not the license, and may not cover important issues that affect you and your specific situation. As a result, reading the FAQ should not serve as a substitute for reading the license itself, or for seeking legal advice from a lawyer.
Btw, note how MPLv2 FAQ page clearly points out that the FAQ doesn't give anyone a license to freely interpret the license itself:
> ...while this FAQ is intended to be accurate and helpful, it is not the license, and may not cover important issues that affect you and your specific situation. As a result, reading the FAQ should not serve as a substitute for reading the license itself, or for seeking legal advice from a lawyer.
https://www.mozilla.org/en-US/MPL/2.0/FAQ/