While you say it's bullshit, I did have the experience you seem to brush off as not having ever been the case, because you didn't experience it. It could have been one or multiple of many reasons why you didn't get to experience it like I did.
Also, I see about the same, if not less, amount of people on my server now as I did during Vanilla. The player base has shrunk, servers started to get deserted, and in order not to force players to migrate, they introduced connected realms.