Russell might not get credit beyond a block, but his team (a teammate) will get credit for a defensive rebound and if it is a good outlet pass that leads to a basket, then a teammate also gets an assist. AYC is arguing that the team effort is reflected accurately in the statistics, and I guess he's right. However, it's true that Russell's individual contribution to the team effort is not accurately reflected by these stats.

If a ball is blocked out of bounds it is absolutely not recorded in the box score in any way, shape, or form beyond as a block.

The reason the name "Bill Russell statistic" has been used is because Russell expressed that when he blocked shots he made a point to block them to teammates to kickstart fast breaks. How can it be debatable whether Russell's single action here is more valuable than if he simply blocked the ball back to an opponent?

If you want to say that Russell's action is really a block + a defensive rebound + a good outlet pass and that his block component is no different from anyone else's, okay - but you and I both know that Russell's only going to get scorekeeper credit for the block, and thus not all occasions where the scorekeeper marks "block" indicate identical value contributed.