That's nonsense. Funnily enough you are getting outraged by a nothing burger while complaining about emotional behavior.
The argument could be summed up as: "since there are fast food restaurants everywhere, quality restaurants do not exist anymore". This is demonstrably false and I wouldn't be surprised that they increase in supply at roughly the same rate.
You are confused because volume is dominated by the masses, but it has always been like that. The major difference is that back then things were much more siloed, and you wouldn't notice the masses mediocre content consumption habits. But it was always there, on TV, in terrible magazines, shitty books and poor journals, you didn't pay attention to them because those things were beneath you, but they already had many times the volume of the "good stuff".