Yes. It depends on your objective, because the mandatory random testing is structured to get a good sample from different parts of the world. That is primarily to look for surveillance purposes and to look for different variants of concern. For that, you need a sample that can be sent for molecular sequencing in order to diagnose variants, which rapid tests will not to do.
We should certainly examine policies going forward in terms of the objective of reducing importations by every traveller. That could potentially shift, depending on the domestic and international context, but for sequencing for variants, the samples have to go to PCR.