Given the number of people now relying on Clouflare 1.1.1.1 to "get Internet" (ie using 1.1.1.1 as recursive name server), I can't imagine APNIC deciding to stop Clouflare using this range.
It seems "too late" to revert this decision. Otherwise people will experience "Internet stopped working", blaming their ISP.
APNIC may decide to keep a working DNS server on 1.1.1.1, but ethically, routing traffic to someone else than Cloudflare is not great.