Long time lurker, first time poster here. I worked with the football team during the 06' and 07' Snyder years and can assuredly say that Doc is not him. I will say, in defense of Snyder, he worked his tail off with the defense, suffered from a talent gap, and played harder competition (IMHO) but that's a different topic.
About Doc, I'm a good Doc/bad Doc kind of guy. Allow me to explain:
Good Doc:
Stable program
One losing record in CUSA since 2010 (2016 still remains a mystery)
No NCAA violations (so far)
6-0 bowl record
7-9 wins every year
Bad Doc:
One CUSA title in 10 years
Only played in CUSA title game twice in 10
Games seem to get away from him (half time adjustments seem to never materialize; looking at you BSU)
If we're playing a team above .500 during the regular season, best to enter with low expectations
Transparency with fans
Like posters have said before, Doc is a safe play; he'll get you to a bowl and probably win it. I think most people who want to see him gone have just grown tired of not winning CUSA because, lets be honest, it's not the hardest conference. Whichever camp you find yourself in, GO HERD!