Can't say it better.
Although I think I see where it is coming from, at least partially. First, the recent crisis with nursing jobs
pulled some applicants (and their $$$$$) out of the field, so programs started aggressive advertisement campains. As they have actually nothing too much to brag about (NCLEX is NCLEX, whether it is done after Ivy League or a state college), they pushed "prestige" and "connections" as winning points as if that could promice good jobs upon graduation (knowing all along that it wouldn't be so). Second, MSN/DNP/PhD programs finally started to wake up and note that everybody with GPA above 2.5 is knocking their doors, so they have to become a bit more selective to avoid their grads running into trouble. As many of them really can't elevate their admission requirements to the point where, for all honesty, they got to be, the programs decided to attempt to play on questionable "level of school". They started from for-profits with historically low levels of NCLEX first-try passes, which was more or less reasonable; that was not working enough, so they probably will move a bit further and restrict admission for grads of "less popular" BSN programs, especially with less-than-ideal other credentials. I wouldn't be surprised if Walden and other online powerhouses will follow this trend soon.
My advice for everyone considering higher degree at any career point: keep your GPA as high as physically possible. "C" may still be a degree, but it looks like lately that low GPA can really affect one's career.