Mozilla lost the tech race and with it a lot of users. Firing a lot of their talented developers didn't help. Now Mozilla is giving up the only reason why they kept a core audience of privacy focused users by sending our browsing data to third party servers for inference just at the time when small local models are getting good enough for many/most use cases like summarization or translation. Chrome provides an API for local LLMs. Apple is trying to run as much interference locally as possible. Mozilla is worse than that. Claiming private browsing while sending data to third parties.

I don't care what their data retention policies are, I don't want my data to be sent to others full stop.

Private means it's mine, it's under my control. Handing it to third parties is not private.