"restrictive and prohibitive" are not examples mindless name-calling. Those are called opinions. So, as you can see, your question is loaded. Oh, did you mean "OOPolice?" If you took offense to that then maybe you rightly were called out for being one.

Now, if you had asked a better question, like "Why do you find this to be restrictive and prohibitive" then maybe we could have a more meaningful conversation. The answer is: because I find them to be unnecessary and a waste of my time. If Betty wants to reach into an object and access its internals, go right ahead. Freedom. As with pretty much any engine out there, you void the warranty when you break encapsulation but why should that stop you if you know what you are doing. These methodologies are for people who don't know what they are doing. And those people shouldn't be doing, they should be learning.