Yes, times have changed where water chemistry is slowly getting more understood. But ultimately the same goal remains: Stable ideal water conditions that try to mimic nature.
How you get there doesn't really matter. Pending your system and bioload requirements you can do a various strategies...
Palythoa Control
So what ended up working. I have a Coral Beauty, Aiptasia Filefish, and rabbitfish and it never touches any of the mushrooms or polyps.