It is you who is missing the larger point here, which is the success of the Steelers. You wouldn't be "GLAD" if somehow that pass fell incomplete. Had that happened, what was the plan then? Try and force feed Brown again on second down? Or, fearing yet another clock stoppage, run the ball twice up the middle for nothing? Then what? Kick a 50+ yard field goal to ice the game, or punt it back to Jacksonville with 30 seconds still left?
I immediately thought it was a ridiculous decision at the time, and absolutely not just something to "***** and MOAN" about. When you can kneel on the ball and win the game, you do it. END OF STORY.