Bahahahahaha. Yeah, given people stand in parades for hours for the 30 secs they see someone go by they wanted to see. I call bullshit. Plenty of other examples of that sort of situation. People waiting outside a hotel to see a music star or something similar for 5 secs.
And with attention spands shrinkings, it's probably better our game doesn't go any longer.
With the clock stopping for the last 5minutes for each half for a lot of game events, it has extended the length of time the ball is in play and the length of the game. At best you extend that to specific events like goal kicks throughout the match. No need to actually extend the time of each half.