A somewhat surprising feature of suburbia in the US (for those of us that come from less safe countries) is that someone like Mark could ever have unbarred windows at street level directly facing a public street. In many places, this kind of recognition system would be at the outer gate of the complex, surrounded by tick concrete walls ending in an electrified fence or similar[1]. At that point, the face recognition does become the weaker link.

Also, even in US suburbia, smashing the window is likely going to trigger a burglar alarm and get the police called to the location, whereas bypassing the face recognition system will not.

[1] For a non billionaire house: thinner concrete walls ending in broken glass or decorative-yet-functional metal barbs, outer wall shared by a 10-20 homes neighborhood.