Had a reply to my email from someone familiar w Po Toi case, who commented:
The work didn't start until late December last year, it wasn't really clear what was happening until late January, the publicity started in Febraury and the restriction was announced on 27 February and made formal on 3 March – quite fast for an administartive procedure. The work was stopped on 29th February and none has happened since.
The work was very shoddy and done quickly, it will similarly fall apart quickly as nature takes it's toll. The only real problem is the small heavy slabs placed on the concrete. These need removal.