Firefox’s free VPN will offer 50 gigabytes of monthly data, which is pretty generous for a browser-based VPN. A Mozilla account is required to make use of it, which isn’t a hardship (they’re free), but is a point of friction some may wish to know upfront.
Usable addition, and the fact that it is only in-browser is actually a merit in some cases. Firefox gets a lot of hate but is way more privacy centric out of the box compared to Chrome. AI is only opt-in and you can literally customize the entire browser using about:config. Mozilla also maintains the only real competing web engine (not considering Apple’s locked in ecosystem) and they are the reason browsers are open source these days.