I hope this is not true!
I discovered a similar site in Macau in May 2011. According to the neighborhood, the Owlets have been nesting there year after year. Unluckily, when the chicks emerged, I also observed a Crested Goshawk raiding the area, going after the chicks! Although the disturbance is not from human, no more nesting activity has been observed last year and this.
Does that mean the Owlets would abandon an unsafe site forever?