Huh? How do you figure? The OP suggested that when using a GUI, all executable bits should be stripped, which I guess is kind of like removing sugar from all candy, at least if you're a fan of far fetched analogies. But I specifically suggested that this action only be applied to archives that are marked as untrustworthy by the system, e.g. mail attachments. The exact same files that are as of today already stripped of their executable bits in the case of regular executable programs, and soon also for .desktop files, would also be stripped of executable bits even in the case of archives.
Since you're a fan of analogies, that would be like automatically stripping the sugar of all candy that was given to you by strangers. Hardly an ideal way of raising you child if that is the _only_ action you take, but it could be one small part of a balanced strategy aiming to raise your children.