So... because we believe now that the moral panic around TV was unfounded, that directly implies there could be no concerns about the impact of consuming large amounts of algorithmically generated "junk content" by young developing brains?

Then, if that's the case, put your kids where your mouth is, go buck wild and sit your kids in front of CoComelon all day.

TV of the past is not okay, especially not in excessive amounts. But I too have noticed that shows from that era tend to be less fast-paced than those of today, so it's probably less harmful.