Not really. Let's say he was under investigation by the ATO for a host of different matters and let's say that the ATO suspected/was hoping there was interesting evidence at his house and while they would like to get their hands on it they were waiting until the right opportunity to do so, without hindering/alerting the subject of the investigation.

Then these new claims are made in the media and they risk not only Wright himself moving the evidence, but also hordes of potential 'treasure hunters' breaking in and stealing things like hard drives in the hope of finding bitcoin - hard drives that also contain things the ATO might want to look at.

And so a pre-emptive raid to take the evidence, before it gets taken by others.