Personally I feel it is perfectly in line with one of Python’s core mentality, “We’re all grown-ups here.” The bahaviour is like Python lacking real access control: If you don’t think about it, it does not matter[#]; if you need it, it’s incredibly useful. You may not like it, and that’s fine, we agree to disagree.

[#]: Well, usually it doesn’t matter, and when it does, you have other ways to achieve similar results.