I did not watch Denmark's debacle against Australia as I was working. It was surely for the best as Denmark played like shit and were surely arrogant (before the match I heard Danish commentators referring to the Australians as "a second division side"). Matthew Leckie scored a great goal where he made fun of Denmark's apparently star-defenders.
The painting was on the wall in the first two matches already; Denmark played without taking a risk and without passion. Maybe it was because of the whole armband controversy; they decided never to confront FIFA and Simon Kjaer, who was afraid of getting a yellow card for taking a stand, did not even play the last two matches.
After the great Euro 2021, when the Danish team managed to create passion, expectations were high (Mine as well), and this is surely the biggest disappointment any Danish national team has given me. A poor performance and a complete lack of cojones.