I have no doubt that FAA personnel assigned, for the long-term, to a particular carrier, are likely to become complacent and perhaps even complicit- misguided as to where their loyalties lie.
For not one minute do I believe that Southwest (or AA, or CO, or DL) ever intended to short-circuit safe operations- it is antithetical to their entire corporate culture. But, one man's aggressive management can be another man's complicit malfeasance, and I bet we are going to find out where that line is drawn.
It has been noted by some that this is not a Southwest problem, and it is not. But if the relationships between FAA inspectors and the MX staff at the air carriers whose maintenance practices they are tasked to oversee become too close, the system cannot work well.