I'll never stop treating my bees.
I may not ever use chemicals.
But going chemical free, requires a certain amount of beekeeper intervention, which I call treatments.
Nobody keeps bees, that could be considered "untreated" or completely void from the effects of beekeeper influence. That may range from the impacts of where you place your bees, the equipment you place them in, etc.
Way too many beekeepers are sold the bill of goods that stopping from the use of chemicals, means completely doing NOTHING for the bees. That is false.
To be chemical free, I have found that a complete IPM approach of the right genetics, and the right management, is required to maintain hive health, have productive hives, etc.
Treatment free is impossible. Chemical free should be your goal. They are two separate issues.