It's almost like professional oddsmakers will often make lines that are really close to the eventual margin of the game.
If you think oddsmakers can accurately predict the final scores you are clueless. The spread moves based on how many people are betting on a given side; the same as in horse racing; if you keep betting the favorite their odds change. It is not set in stone; by your logic the spread wouldn't move because an expert already knows how many points team A should beat team by B. LOL.
Yes I am aware that lines can move over time; I'm also aware that they are initially set before bets are made and rarely move far from where they start.
But FYI I agree with you; professional bookmakers setting lines that sometimes are very close to actual margins is just crazy talk. Obviously the more logical interpretation is that NBA referees are involved in a massive conspiracy to keep the Celtics from covering the spread for some reason.
But there's more to it than that; I notice your examples of blatant fixing also rely on players missing FTs and making unnecessary fouls; from this, we can see that the conspiracy runs a lot deeper. It's not just the refs manipulating the spread, but the players too. In fact, based on that Spurs game,
Ray Allen is clearly betting against the Celtics, and shaving points to get there.

We're through the looking glass here, people.