Last time I heard this crap in real life was back in 2018. Things have progressed immensely over the last decade, though. Now almost everyone "knows better" due to relentless marketing from big companies, including phone and TV vendors.

Before that, 30 was totally fine for the masses. In fact it was preferable. Cinema is the last big holdout and, apparently, it's going to take at least another decade before even mere 48 is standard. As someone who has been riding the 120+ fos for over two decades, going to the movies is awful, especially action scenes and panning.