Firefox shares browsing data and other unique info with “ with partners, service providers, suppliers and contractors” including Cloudflare and Google

Firefox doesn’t share browser history

Wished people actually read the ToS instead of just believing a post.

This is explicitly said here:

Firefox processes a variety of personal data in a way that does not leave your device, such as browsing history, web form data, temporary internet files, and cookies. This means the data stays on your device and is not sent to Mozilla’s servers unless it says otherwise in this Notice.

Learn more about what Campaign Measurement data is collected and shared, and how to opt out. Note: Firefox does not share information like your browsing history, search queries, or saved passwords with marketing technology partners. Mozilla only collects the data necessary to measure and improve our marketing campaigns.