If we’re going to use this kind of metaphor, I would say Firefox is just doing a mixed job of cleaning up the mess Google made on your carpet.

They doing both cleanup of Google's mess and adding their own mess. They are being criticized for the latter. Add to that that Mozilla, unlike Google, pretends to be a cleaning company when they want you to let them into your home.

> when they want you to let them into your home.

Are you trying to say that Mozilla/Firefox is engaging in the same data harvesting, usage, and dissemination that Google is?

Mozilla has frequently made questionable choices with its ad tie-ins and promotions. Mr. Robot ads, anyone? Unlike Chrome, Mozilla has also embedded full on data-collection schemes (Cliqz which tracked typing and browsing to test monetisation strategies).