The link in the UI doesn't mention sponsorships anywhere. But this page does:
Who are Mozilla’s partners for sponsored suggestions?
We partner with organizations to serve up some of these suggestion types... For sponsored results, we primarily work with adMarketplace, while also providing non-sponsored results from Wikipedia.
This page links to the adMarketplace Privacy Policy which makes it pretty clear this company is okay with collecting your IP address and passing it to further unnamed entities.
Elsewhere, they say Firefox sends them "the number of times Firefox suggests or displays specific content and your clicks on that content, as well as basic data about your interactions with Firefox Suggest", and then will share interaction information "in an aggregate manner with our partners".
Update: Switched the link from the Desktop to the Mobile version. Added more quotes from FF, and bolded info about their one named AdTech partner.
ermagawD there's an toggle able option on my browser to turn off a feature I don't want?
And it's a free and open source software that I don't contribute to at all,
That's ducking it.
I'ma b̶u̶i̶l̶d̶ m̶y̶ o̶w̶n̶ b̶r̶o̶w̶s̶e̶r̶ w̶i̶t̶h̶ b̶l̶a̶c̶k̶j̶a̶c̶k̶ a̶n̶d̶ h̶o̶o̶k̶e̶r̶s̶ complain on an internet forum about how unfair it is that they are going against my principles and are making money off of it. They gotta ask for handouts like the rest of the opensource projects out ther. I'moutraged. They gotta learn their place.
If you want to tell me I don't have the right to critique the browser, be upfront and simply say it.
And tell me exactly how you expect people to contribute before we earn the right. Especially considering Mozilla does not allow donations to go to Firefox development, and the CEO is badly overpaid.
You're right. I invite you to build our own browser with blackjack and hookers!
Maybe we will be able to get a release in around 10 years, +-3, if we work on it full time.
Yeah, you need to clean up the browser before using it because the browser is full of advertising and tracking by default. The massive telemetry and reflinks and "hidden" extensions need to be removed, as always.
It looks like this has been in the desktop browser since 92 (released in 2021) but a new addition to Firefox 120 and beyond. But it's a staged release so not everybody is going to see this "experiment" at once.
You can't Betterfox your mobile Firefox, can you? Thank goodness for decent mobile browser forks...