It's a pithy response that undermines the challenge of a problem nobody has been able to solve even with years of effort and billions of dollars.
As the OP said, "it's not a hardware problem," in that the quality or number of cameras, sensors, etc. isn't the bottleneck to solving this problem.
That level of resolution doesn't matter at all for driving. People can drive just as well through a video feed, like Starsky was doing. Yes general AI does not exist yet, but my point is simply that the parent made a comment about the need for hardware which is simply not true.
I can tell you from experience this is false. It usually works, but when it doesn't you're fucked. People wildly underestimate, by orders of magnitude, how many and how complicated the edge-cases are for self-driving.