"No shady privacy policies or back doors for advertisers" proclaims the Firefox homepage, but that's no longer true in Firefox 128.
Less than a month after acquiring the AdTech company Anonym, Mozilla has added special software co-authored by Meta and built for the advertising industry directly to the latest release
Here’s the best part to that. Safari’s back end is called WebKit. At one point in time it was considered best in class. It was also the backend for Chrome as well for awhile.
Chrome still uses WebKit.
They forked it into Blink a long time ago now. They’ve diverged significantly since then.