Although this is some blatant scare mongering I do agree with the underlying sentiment. Firefox really is the only viable option if you care about both your privacy and a FOSS future. Mozilla have done some equally (and in many ways worse) stuff in the past but being the only decent non-chromium browser it allows us to not be as reliant on Google created products. Also great projects such as The Tor Foundation are reliant on Mozilla continuing to update and maintain Firefox so it would be a travesty for it to be lost.