It's mostly overblown. You can watch here or read here. The internet is overreacting again, but Mozilla has done fuck all to grasp why just yoinking understandable language and expecting people to understand legalese and draw lines to their Privacy Policy is making people upset or confused.
Imo, people jumping ship is justified, because a company that makes $37M just on investments should do better about being vocal and prescient champions of privacy. Even if their actual privacy policy is the same as it was a year ago, their failure to communicate with their supporters in a way they can understand should have consequences.