Why are courts using Chinese spyware to conduct official business?
Because the risk profile permits it. In this county, many courts are open, and prior to COVID, you could just walk into one and listen. Court decisions are likewise open, and part of the public record.
Edit: Did you also know that courts and lawyers still use faxes? Did you know that tapping a fax line has been trivial for decades?
The court is open to the public. What threat is "chinese spyware" when you are publishing the meeting anyway?