Weakside floor-spreaders take defenders away from the strongside.
In the picture above, Joakim Noah has to leave Mosgov and flood to the strongside, otherwise the strongside won't even have 3 defenders on it.. But this is just a simple example of how weakside spacing necessitates strongside floods, all of which is beginning-level strategy used by every team in today's game.
Otoh, teams barely took any 3-pointers at all in previous eras, and therefore didn't have weakside floor-spacing, so offensive players frequently faced all 5 defenders on the strongside of the court
, and therefore a tougher defensive environment.. Today's players never face a strongside with all 5 defenders on it, because teams ENSURE this doesn't happen with weakside floor-spacing.
Btw, the look how wide open the strongside flood leaves Mosgov.. If Lebron passes to him for an assist, how can that be considered on the same level as the needles MJ had to thread
in the no-spacing 80's & 90's?