This is completely messed up. It's hard to believe what's happening and how badly it impacts the competitive balance of the league.
Well, it really wouldn't be that big a deal if all the tanking teams at least relegated. Like Dirk tanking hardly affects anything. (He's doing it like it was probably envisioned). The problem is that tanking teams are allowed to stay (so there's a bunch of them, no consequences)... while forcing competitive teams to demote. It turns the regular season into a farce.
Forcing all tanking team to relegate at the end of a season would solve the problem i think. Tanking should be a last resort / complete rebuilding project type of move only.