Teams were tanking but half assing it. Tank then they play hard and become too good to get another useable player in the next draft. Unless you have a good free agent destination you are not gonna get marquee players. The only way Philly could get a Joel embiid and think championship was to draft him. Tanking gives you a chance at a franchise player. And even then you have to draft well. Teams are losing entire years to draft the marquese Chris and Anthony Bennet's of the world.
Don't get me wrong you can still get good players later in the draft like giannis, Donovan Mitchell, Gobert, Kawhi. But you need foundational pieces before you go there.
I'd say tank but do it in the years where there's multiple can't miss prospects coming out or make sure you are bad enough to get that prospect or you wasted a year.
There was a time when we ( wizards) used to be constantly in the lottery for top draft picks with golden state, Sacramento and Cleveland. Two of those teams built their foundation off of those picks..the other one Cleveland traded theirs away and got better.. And the other one blundered away their picks