"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
So is it safe to assume that alternate builds of Firefox (Pale Moon et al) will be probably removing that “feature” ?
Probably in your best interest to read their release notes