I guess, now that I look at the numbers, it has been 15 years. TN has had other PGs (though not in the last 4 years), but if you want to spin the story of lack of success at the position, have at it.
(on Edit) and yes, Michelle transferred to TN and developed into a very fine player. It happens. It's not all bad there.
You call it spin, I call it a realistic look at the track record. Let's take a look as far back as I can recall:
1995-96 - Marciniak. Very good but she transferred from ND. I don't see a lot of TN development there.
1997-99 - Kelly Jolly. A very solid but unspectacular player who teamed with Holdsclaw and company for 2 NCs in those years. IMO she is the only PG who developed a lot at TN. Also IMO that development was more due to Jolly's makeup than the coaching at TN. Jolly is now succeeding as HC at NC State.
2000-01 (approx) - Ace Clement. Very highly regarded out of HS but did not develop at all at TN. Maybe even regressed.
2002-04 (approx) - Kara Lawson. Really more of a 2 guard but filled in ok. She was similar to Jolly IMO.
2007-08 - Bobbitt. Juco transfer. Came to TN with a lot of experience and swagger, exactly what was needed there to team with Parker, Hornbuckle etc. I don't see much TN development in her case.
2009-11 - A void, other than Bass who is simply not a PG who can compete at this level, and obviously has not developed. Probably hurt Stricklen's development as an overall player by having her play PG.
2012 - whenever. Massengale. Obviously to be determined.
So, as I see it, that's not much of a track record.