My dear mate it's just mind game from Australians because we all know about them how they have done these things against their opponents for this semifinal they are feeling some pressure which is surely had some big impact after losing against quality team like England very badly, so they are using their tactics even it's not going to have any special response from PCB or team for this match, but they started this all on good time. Still we have nearly 4 months for this all and after sudden quit from New Zealand it's uncertain until we have all completed it's just a rumour.
Australian already have some bad reputation about their poor judgment's as they have done against South Africa, so currently it's time to just chill and enjoy currently CWC's last 3 matches which are going to start from 10th November.
Fully agree with you. It's just a tactics by Aussies to get sympathy of PCB before the semi final. I too was surprised after reading this news that how can Aus agree to play in Pakistan at a time when both England and NZ have canceled there tours. I don't think they are poor in making judgements rather they are smart in making announcements at crucial times. PCB also looks convinced they Aus won't come in March 2022.
So it's time to focus on remaining 2 games, as NZ has qualify for the final.