Kyler Murray's career as a Cardinals QB:
Best in Cardinals History:
Completion % = 67.1
Quarterback rating = 92.2
Second in Cardinals History:
Completions = 1,974
Third in Cardinals History (Number one in Arizona History)
TDs = 121
Yards = 20,460
His career interceptions are 60. The only Cards QBs out of their top eight with fewer INTs are Palmer who had 57 and Warner who had 59. But Kyler had roughly 800 more passing attempts than either.
en.wikipedia.org
Do with those numbers what you will. To me it looks more like a sad sack franchise than a sad sack QB dragging a team down.