You should be mad at Weber, IMO. He was handed the golden ticket built up by three previous tenures and managed to muck it up, much like he is doing now at K-State.
What we can agree on is that Groce is not John Calipari and able to recruit his way into a 1-2 year turn around with multiple future NBA all-stars.
Groce inherited a poorly constructed roster and had some costly recruiting misses in the first few classes (we all know each one, starting with DJax). To try and fill immediate voids caused by those early misses, he took transfers that have mostly been a total failure. And, last, but not least, he has had to deal with injuries that have caused a significant ripple effect in recruiting and on-court performance during these past 5 years.
Moving forward, it looks like the roster construction and talent levels are finally showing signs of being upper echelon B1G caliber, which should make coaching easier. Not to mention, FINALLY having a competent point guard has made a dramatic difference.
For those saying people have lowered their standards if they feel keeping Groce is the right thing, I would disagree. Obviously all the data of his tenure paints a clear picture on paper, but there was a previous coaching tenure and many fixable circumstances that account for most of that.