> It can't both be redundant and be solved by moving one of the interfaces somewhere else. Either you meant to say it's not redundant [...]
I never said it was redundant. Perhaps you mixed me with someone else?
Regardless of how you call the fallacy, I think there still is one since the vagueness of the term "regular user" seems to implicitly define out the users that would need to access the cookie dialogue.
If the wording is switched to "non-developer", then I once again disagree with this conclusion. Non-developers should definitely retain the ability to view, edit and delete their cookies.
I view this mostly as a matter of power. Yes, non-developers won't be editing or deleting individual cookies most of the time. However, if a website starts misbehaving and attempts to seize control of some part of experience from the end user, the end user must have the ability to counter that.
Having the ability to delete and edit pieces of information stored by websites on the user agent is a crucial part of that. If you take this ability away, then you ever so slightly took control out of the hands of the end user. In the end, you are making the user powerless and submitting them under your control.