The article describes Firefox Private Network[1], which gives you a secure connection to an HTTP/HTTPS proxy server being run by Cloudflare. It's not a general purpose VPN and it is currently free. You can read Cloudflare's privacy notice here[2]. Some highlights:
> The intended use of the proxy service is to shield HTTP/HTTPS requests from eavesdropping by edge network providers such as public WiFi hotspots. Avoidance of geographical restrictions on content access is explicitly not a goal.
> Cloudflare is a data processor for the Firefox Private Network, which means Cloudflare may only process the data according to Mozilla’s instructions. .... The data Cloudflare processes for the Firefox Private Network is subject to Mozilla’s Privacy Policy and is not covered by the Cloudflare Privacy Policy.
> When requests are sent to the Cloudflare proxy, Cloudflare will observe your IP address (known as the source IP address), the IP address for the Internet property you are accessing (known as the destination IP address), source port, destination port, timestamp and a token provided by Mozilla that indicates that you are a Firefox Private Network user (together, “Proxy Data”). All Proxy Data will be deleted within 24 hours.
I am also not sure how I feel about it, but one thing that immediately pops out to me is:
You may cancel your subscription to this VPN service at any time by clicking the “Cancel Subscription” link in any email that we send you. If you choose to cancel, your access to the service will stop immediately, and Mozilla will refund you for any unused portion of the service period within your then-current billing cycle. This means Mozilla will prorate your refund based on the remaining full days of the subscription period.
That's the quality and user centered experience I expect from Mozilla,
I still remember trying to cancel my audible subscription, and I ended up having to google it because it was so obfiscated.
[0]: https://www.mozilla.org/en-US/about/legal/terms/vpn/