Browser extensions that say they help with comparison shopping are a very common type of "Potentially Unwanted Application" (PUA - aka malware with a legal team). The infamous Superfish is an example of this type of thing, and there are many others.
I don't know anything about your business or the extension, I'm just pointing out that you're in a space that makes you suspicious by association.
Fair enough. But this has nothing to do with Mozilla's actions. It was as GP said. It includes things like their incompetence in dealing with a build process that creates transpiled/minified code. Even when I gave them all the source and the build instructions (npm run build) they still couldn't comprehend what was going on. Yes, I know it's strange since Mozilla makes a browser with a JavaScript engine.
Edit: I should add that after 2 weeks of back and forth emails the dude was finally able to build it then blamed me for not mentioning he needed to run "npm run build", even though I did mention it AND it's in package.json AND it's mentioned in the (very short and concise) readme.txt.
So after this exasperating experience he just took down the extension without warning and said it's because it contains Google Analytics.
I would have happily removed Google Analytics from the extension. The dude had my source for 2 weeks and could have told me about that at any time, but decided to tell me after 2 weeks of mucking around, after he had already removed the extension.
It was me that decided it was not worth the hassle to have the extension on their store. I just left it off.
Nah, not that keen personally (I don't even use Chrome). I was just pointing out that it would have been useful to have the URL to reduce confusion. :)