I believe Rob is trying to underscore the fact that there are variable ways to record a Work's title (not to mention an Instance's) and, because there are variable ways to do it, the query becomes, well, ridiculous.
So, I believe Rob kicked off a thread that basically asked why are there two methods to capturing title information. One way is to use a literal string and the other is to reference a bf:Title resource. [... examples ...]
The variability probably reflects a few things: trying to have it both ways so that implementers have the option; a misunderstanding or miscommunication about how multiple groups and individuals think about "titles;" a desire to accommodate old and new cataloging rules; and a level of parity with current cataloging practice.
Personally, I am in favor of investigating treating titles as string literals. (And I mean all titles: constructed titles, regular old-fashioned-this-is-the-title titles, abbreviated titles, spine titles, key titles, added title page titles, etc.)
However, that's a lot easier to say than it is to robustly test and robust testing is needed because titles clearly unearth a number of little-considered but real issues, such as a Work with multiple titles,
each with translations or transliterations 
and the need to capture the fact that a title was added by a cataloger
While the bf:Title construct exists as an attempt to address /some/ of those less common cases (such as a cataloger assigned titles), it remains problematic because it is hard to square that particular use case with existence of "bf:formDesignation" or "bf:titleAttribute," the definitions of which strongly suggest they are aspects of the Work, not a "title."
Which brings me to another point: When we - as listserv participants - say "Title" are we always talking about the same thing?
So, I think these last questions are the first ones we need to find agreement on.
1) Is a title an attribute or property of a Work or Instance? Do you think of a "title" as synonymous with a Work (or Instance), that is, the thing you are describing?
2) Is a title a type of Thing unto itself, one that can have its own identifier, and is related to but otherwise distinct from the Work or Instance you are describing? It is something that is associated with a Work but is not necessarily a property or attribute of the Work? Though this is not only way to look at this, one wants to ask: Are titles re-usable?