To be fair, nobody has said “genius” regarding Ireland’s tactics (at least not in this thread AFAIK) and if they did, then it would be an overstatement by some stretch.
It was all very simple. Schmidt knew he had a superior fly half and a scrum half that’s an excellent tactical kicker (except when he kicks it to an AB with a minute left on the clock 😆 ). The plan was working, possibly even better than the green machine had expected. POM was lethal at the breakdown and Lydiate was gifting penalties. So they stuck with the plan. Moving it out beyond the half backs might have given us the cricket score we’d have loved, but North, Roberts, et al can run an intercept try in for seven points even on a bad day. D’Arcy and BOD while both still excellent in defence are not the game changers they were in attack. IMO, the choice was to sacrifice the high score for the lack of risk. Keeping ahead of Wales by a try and a bit was always enough on the day, 26-3 was a fair score given the dominance and tactics in the end.
Hook should have been brought on for the last twenty when it looked like the game was beyond Wales. Anything would have been better than what Priestland was doing.
Genius? Of course not. But enjoyable in its simplicity, yes. Schmidt out thought Gatland, but yesterday, there wasn’t much thinking from Gatland to out-think.