I too think this was condescending, arrogant, and off the mark. I was born well after rabbit-ear TVs, but I know one when I see it. Ditto, Polaroids were a quaint novelty even when growing up, but I still know a "polaroid border" on an image when I see it. Indeed, the old style microphones (a la Siri) haven't been used in
decades before I was born, but yet the iconic shape is unmistakable to anyone in my generation.
Indeed, the author seems out of touch with the state of 20-somethings right now - if anything present-day 20-somethings are the most Polaroid-obsessed generation in quite some time. The market for old, restored Polaroid cameras has exploded in recent years. That iconic Polaroid camera icon on Instagram is quite recognizable to the youth of today.
As iconography this seems hardly relevant. When's the last time the author used a magnifying glass for real? Hell, even in the old days how often did people ever use magnifying glasses? But it certainly has no trouble being the universal symbol for "search".
This is the power of iconography - they are not the objects from which they are derived, and over time and use they take on meaning of their own.