Of course, if it were rigged, it would be a disadvantage to us bettors. All our attempts of researching would become pointless. But the good news is that it's not rigged. 
And my vote went for NO.
Since the 2007 NBA betting scandal there were no serious accusations against the NBA, and even that case didn't imply the games were rigged.
Its really a disadvantage for us yet this wont really be going with the path on what you had analyzed since its been rigged.So far i agree that aside on that 2007 event where And my vote went for NO.Since the 2007 NBA betting scandal there were no serious accusations against the NBA, and even that case didn't imply the games were rigged.
there are no other incident about possible rigging or shady calls.We cant completely say NO that it isnt rigged if it happened in the past but those were just allegations but
theres no solid proof that had been presented so it can be still considered on not to be a valid one.We can have our own insights though but majority is believing on the same thing.