That's exactly the use case—I think after they switched to wayland, and RealVNC didn't work (it was included with the default install on every full version of Pi OS), they wanted to make sure there was an easy to use replacement.

Most of us on HN use our own VPNs, or have a dozen other ways to get at infrastructure from anywhere (and mosh, as others have suggested, is a better alternative for simple shell access over high-latency flaky connections)... but there are a _lot_ of people who don't want to (or couldn't figure out how to) maintain their own VPN. Or they want to deploy Pis at remote sites and each one has a weird and unique networking config, and they don't want to mess with Tailscale or the like.

It's a useful service, but it's not supposed to compete with homelabber setups, or enterprise solutions. At least I don't think so.