You're not addressing the root concern which is that healthcare is notoriously insecure. Approaching this as "who cares if things get leaked" instead of improving security of records is why getting data is impossible.
What's my or your biggest concern is irrelevant. Patient data security is why you can't get the data you say you need. That is just a fact and I would think energy is better served towards improving the handling of patient data if you want easier access to that data for research purposes.