Offtopic:
<A top secret military acoustic detection system designed to spot enemy submarines first heard what the U.S. Navy suspected was the Titan submersible implosion hours after the submersible began its voyage," and that "the U.S. system detected what it suspected was the sound of an implosion near the debris site discovered Thursday."https://www.zerohedge.com/political/distraction-questions-swirl-over-timing-sub-story-biden-bombshells-hit-targetThey probably knew these people were dead all along, but for several days after they lead everybody to believe they might still be rescued. And that might have been to distract from a tax-scandal.
Ontopic:
Yeah remote controlled drone submarines have existed for decades. Of course 3d-goggles are much nicer than a closed-circuit-camera feed on a 480-lines cathode-ray-tube screen from the 80s but it's essentially the same thing.
The next technical evolution of this is going to be swarms of AI controlled drone subs that use cameras and a bunch of other sensors to do a volumetric scan of an entire area and then you get like a detailed 3d render with a video game interface.