Can't see their legs to see how straight they're standing, either.
This is a very bizarre agenda at any rate. Chris Paul (5'11.75") and Isaiah Thomas (5'8.75") both have official barefoot measurements from the NBA draft combine. Somehow that doesn't stop those who insist on diminishing Thomas relative to the rest of the league. Besides, Thomas has played three years in the league now. We have a pretty darn good idea what he can do on an NBA court, and a pretty darn good idea what he can't do on an NBA court. We already know that his height negatively impacts his defense, and that should be taken into account when assessing him as an overall player. But exaggerating his height doesn't suddenly make him a worse defender. You could try to use any photo angle you want to try to prove he's 5'1", or try to use any photo angle you want to prove he's taller than Chris Paul, or try to use any anecdotal "my friend is X tall and he stood next to Isaiah at Krispy Kreme so..." to challenge the NBA's official measurement. None of that posturing changes his actual height, and none of that changes his actual defensive ability. I don't get why people insist on doing it.