It's less about purity and more about overhead. Adding this feature adds friction to refactoring the code, adds surface area for vulnerabilities (and the user i

It's less about purity and more about overhead. Adding this feature adds friction to refactoring the code, adds surface area for vulnerabilities (and the user ignoring it won't make that go away), and makes the binary bigger. The cost/benefit ratio might well be favorable, but implementing this feature absolutely costs something.