It could be a text added with the evil purpose of let us thinking that they will really add that feature
The system was prototyped, and then just held back from publish. The strings were mistakenly not removed from the client patch.
Basically, we decided that the addition of the ability to remove the negatives from the new items would be too much and too soon. An item with 800 points of weighted item property intensity is one thing if it's cursed and unrepairable. It's another thing entirely if you can fortify it up and insure it.
Now, the way we prototyped it was to have the costs scale up geometrically with the item property intensity. For a seriously good item, the costs were multiple millions of Clean Up Britannia points, to completely clean the negatives off an item. Also, it would only work with items generated by the new Shame loot generator.
The way I would like to change it would be to disallow the removal of Brittle and instead have it allow the use of Clean Up Britannia points to repair its max durability. Essentially, to allow the extended use of these items, but at a relatively high recurring cost.
I'm all about the tradeoffs. Those are interesting.