The issue is not that by being healed the person is actually being Oved the AZ. The problem is that he’ll follow the belief. This can obviously not apply when there is no belief and only the detractors are trying to dig up Apikursus origins. The issue applies to the belief of the practitioner, not the history.
As I said, the Rashba even suggests that Kishuf should be Muttar for healing.
I have no issue with complaints against alternative stuff. You wanna make a public awareness of the dangers of not following your doctor? Fine. You want to explain that this is in fact Assur? Go ahead. Just don’t make up Halachos. We have enough things labeled Avoda Zara, Kefira, and even Chazer Traif. It’s time to pick another Issur. Conflating these Issues is Mamesh Kali Hakerem.