Old timers lead the charge with that 'watered' down bullshit. The game is global. The 90s and the Dream Team helped that.
In the 60s, they had a white quota. They kept black players out of college, and that's why it took until the mid-60s to have an all-black starting 5.

But most of all. Most of fucking all. The video evidence of the terrible play is there.
1. They couldn't dribble: They dribble to the left with their right hands. It looks like girls basketball did in the 80s.
2. They couldn't shoot: Just watch the tapes. It's brick fucking city. Awkward shots. Slow releases.
3. The game was slow yet fast: Meaning, they moved like their feet were in mud, but they kept jacking up shots and going up and down.
4. Few players were competent with both hands: Players have been using both hands inside for decades now.
5. Limited post moves.: Could you imagine Kevin Mchale or Hakeem back then? Those white boys would just throw the ball in the post and start running back down to play defense.
If the 90s are being clowned, the 50s and 60s should be clowned into fucking oblivion.