It's the same way people used to bang on about Stoke's tactics when they played the big teams. It doesn't matter how you play as long as it's effective, and it was certainly that last night.
I take your point, but this is more ridiculous than that. All the commentary / pundits / presenters were telling us things last night, completely at odds with what we were watching.
AM's style isn't long ball or agricultural. They are not cloggers - they made exactly the same number of fouls as Liverpool in the game (17).
They defend narrow and deep, and enjoy defending. They wait for an error, to hand them the ball, and when they have it they try to use it.
The final goal was beautifully worked.