According to the story it's locked to a designated "cell" with a diameter of something less than 60 miles, so it would be just a nice modern end-table in China. The fact that it depends on accurate GPS and phones home continuously makes the geofence hard to hack.
FWIW, from my limited experience with the firewall there--they do less banning protocols, and more banning specific endpoints people are using to bypass the firewall.
I never tested WireGuard, but, for instance, I had no issue connecting via OpenVPN to personal and work VPNs from China (on standard ports with no effort to hide). If you try and use OpenVPN to connect to any of the well-known VPN providers with it though, it will be blocked.
Even if you find it works initially, as soon as someone catches wind of it being used to bypass the firewall and/or they see a surge of traffic to your services, you're likely to end up blackholed.
Especially for a paid service, it's probably more of a support headache than it's worth.
Unless you're looking to make a stand, I'd probably just steer clear of the whole situation. It's illegal in China to operate an internet services without a license and it could come back to bite you in the ass down the road if you ever intend to do business there or travel there.