Growers and Caregivers (interesting you separated them into two groups) do not 'protect' patients. The MMMA Section 4 'protects' patients. If that fails, it is up to Section 8 to allow them to mount a defense with the backing of the caregiver, doctor, and of course a large legal team. It appears from your response, and this is just an opinion, that you view the MMMA and its provisions as irrelevant. Are you stating your activity with cancer patients is somehow outside of the law, or as long as you are doing good deeds for your patients all is well? Considering the wording of the Act and recent court and legislative actions, I would suspect your fantasy of 'It's all good if it is for a good cause.' will get you and others in trouble for your actions. But you are a big boy, do what you want and take your lumps.
Dr. Bob