A law or regulation without enforcement is merely a suggestion.
Right now the DPH isn't issuing hardship cultivation licenses. They are literally telling folks just to grow.
Given the change in how PD are allowed to get warrants and the fact that the DPH doesn't have the manpower to deal.
If you are a medicinal patient I don't think you will have any problem setting up a person home grow tent. If you're trying to make a business out of it then yes, you will be risking some exposure. But then again, the regulation stipulates that a caregiver provide for a single patient. Yet there are booths at conventions here with a guy who services thousands of patients and operates a network of caregivers.
Sadly, you kind of have to look at medicinal in Mass as insurance. If you have your card/cards you're basically going to be left alone. If you keep your nose clean and don't do anything overtly stupid then DPH will never notice you b/c they can't keep up as it is.
I'm mostly hoping for a shift in the law to allow collectives so I can then run a collective grow and buy/sell from various caregivers to make sure my patients are getting the best medicine. In my limited experience so far, the best meds are coming from the gray area caregivers, not from the dispensaries. Not to mention that the 'vertical integration' model just reinforces the haves and the have nots so honestly if my caregiver operation were to get busted I would happily go to court over it. An unjust law is no law at all.