I don't have such a proprietary stance on reply note titles, and would be happy to defer to the editors in this case. If Editors feel right in changing the title of a root node, then changing titles of notes that use the default Re: mechanism should present no further moral hazard. I agree that deliberately altered titles, such as yours above, should be immune from tampering.

The confusion can arise in Newest Nodes, wherein it can be difficult to determine by inspection which notes are associated with which root nodes. Yes, one can click on notes to see what they bind to, but that grates against my sense of Laziness.

Thanks for your consideration,

-Mark