Obviously the "not really helping" is the critical part of that statement.
In many cases they help a great deal.
"Depriving people of liberty" is also an appeal to emotion. While that does happen briefly in some cases, it's not really the norm. I'm sure you'll find that any one in healthcare is only going to do that if the patient is at risk of harming themselves or others. The alternative is allowing people the liberty to harm themselves or others.