Watching through some of these now. The second tweet in OP hit the nail on the head. The game was sold much better back then. It really was as soon as NBC lost its NBA rights to ABC/ESPN that the story telling aspect of the league fell off. Everything felt larger than life with NBC's broadcasts. NBA games, especially the Sunday ones, felt like events like the NFL.
With social media and the extra access to players now, I'm not even sure how you would capture that magic again.