We should try kicking off whilst the opponent's are busy singing their anthem, and then say "meh, you should have been paying attention".It's a bit different if the game has been stopped and not restarted we can't blame England for not being ready otherwise do team have line up whilst a player is being stretchered off the pitch?.
That onus is purely on the ref to restart the game properly.
The game was stopped, there was no need to pay attention