Why do people make a big deal about blown calls sometimes by umpires?

if jeffrey maier didnt interfere, the yankees still wouldve won the ALCS. if tino martinez struckout in the 98 world series instead of hitting the grand slam, then the yankees still wouldve won the world series. if phil cuzzi didnt blow the call in the 2009 alds, the yankees still wouldve won the alds