Two bigs is the new way forward of the NBA with all the shooting bigs. Teams were exploiting your only big by pulling him out by using the opposing big man as the screener and then having good driving and cutting lanes because the rim protection was gone. (Curry cooking Gobert comes to mind, my God that was fun).

Now if you do that you can pull the first big out but the second big just replaces them in the paint. Forces you to finish over rim protection and you can play much more aggressively on the perimeter because if you get beat they have to settle for low value midrange shots or finish over traffic.

Offensively it works if you have one of your bigs able to shoot the 3 because they are just another wing at that poknt