Eventually Fort Knox will succumb to the unrelenting arrow of time and some future visitors will simply step over the crumbling wall and into the supposedly "secure" area.
a) this was a security win. millions and millions of people had physical access to the device for over a decade
b) as others have said, security is not all-or-nothing. the xbox one is extremely secure, despite not being perfectly secure.
c) just because something eventually gets hacked does not mean security was pointless. delaying access is a perfectly reasonable security goal. delaying access until the product is retired and the successor is already out on the market is a huge win.
This console went completely unhacked for 12 years, with this coming a solid 4 years after the hardware was discontinued. They kept piracy off the console for its whole lifespan, which was the entire point of these security measures. This is a massive success for the Xbox security team.