https://www.mozilla.org/en-US/firefox/welcome/11/
remember, only by paying mozilla $60+ a year can you get the benefits of a free VPN while also giving mozilla money for some reason
also the FAQ linked from that ad states that
Which means, unless they are lying to you in their official FAQ, the mozilla VPN is "firefox content"Do Firefox Browser welcome pages ever feature ads or sponsored content?
No, never. These pages feature only Firefox content.
whatever that means