Sorry I might come across as harsh, but you indicate this is a 'defect', at the same time your comment makes clear that this is a known issue and you choose to keep it that way.
> The other reason this product defect has persisted is because our Free Basic users use the links to QA their own self-service opt out work.
You can't have it both ways - either admit its intentional or change if you know its deceptive.
The whole thread here convinces me that this is neither a product that should exist, nor does this startup have the users' interests in mind.