We are missing the context how the statement was said in the interview. The CEO is new and not used to the scrutiny that position brings, especially for Mozillas CEO given their purported ideals. It is quite possible he said this as something absurd -> "If making money was our only goal we would have some other options. We could for example disable all adblockers, to get more money from our advertising sponsor Google, at least 150 million USD. But we can not and won't do that, as it would feel completely off-mission for everyone and harm us long-term. So we always keep our mission in mind." Then the journalists shortens it to the blip in the verge article and the reaction twists it around a bit more, assuming disabling adblockers was on the table as a serious suggestion.

Or it could be it really was on the table since they just entered the advertising business and think AI is the future of Mozilla, a "fuck those freeloaders", heartfelt from the Porsche driving MBAs in Mozilla's management. Who knows. But it's a choice which interpretation one assumes.