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I like to think of it as the evolution of more tech-savvy consumers.
Even in the days of analog TV, things like SNR, noise figure, power levels, amp overload, gain, and adjacent channel rejection were very important, but people were not so well equipped to interpret the technical specs or make informed decisions based on them.
Today, we have an amazing repository of information and tools at our fingertips, thanks to the internet. Now we can base our purchasing decisions on real facts and hard data instead of relying on marketing- or emotion-driven impulses. The sharing of information has resulted in tremendous growth of our collective depth and breadth of knowledge.
A lot of the technology is actually still the same as before, but our ability and confidence in understanding the underlying technology has gone up significantly.
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