To the best of our knowledge, usage tiers still exist. I think elite players make sure to have enough usages points and then go by a metric I haven’t quite figured out yet. I think they do FGA/min.
At a 52 cap, you really have to try to have less than 95 usage on the court imo. Some people aim for 100-110, I I have had success with 110-120 in this league.