The goal post ribbon?
Was there a crucial pass or kick that passed 40 feet over the goal line and brushed the ribbon rendering the ball dead?
Of all the potential pitfalls to the rules, this made it to the final recommendations?
Be a bit brave and make the whole goal post assembly live. Or get rid of TV timeouts… or make the rouge count only on returnable kicks… or get rid of coaches challenges and move to booth reviews only… or streamline illegal kick out of bounds rules so they aren’t different for kickoffs, punts and other kicks from scrimmage…
None of those things were more important than making contact with the goal post flag live?