Neither statement is true.
The stated plan is to resume around 2000 hectares of fishponds in these areas for conservation as part of its plans for the new "Northern Metropolis". The whole plan can be found here:
https://www.policyaddress.gov.hk/2021/eng/pdf/publications/Northern/Northern-Metropolis-Development-Strategy-Report.pdf
The section in Chapter 4: "Implementing a Proactive Conservation Policy to Create Environmental Capacity" provides more details. This includes some maps showing the areas intended for conservation.
As with all policy documents this is only a plan - and much will depend on the details of execution. HKBWS is working to find out what additional details are available and will continue to make the case to protect these outstanding wetlands.
Cheers
Mike