It seems like blue water navies like the US Navy have replaced their amphibious fleet with LPDs, LHDs and such. If PLAN wants to become a blue water navy shouldn't it follow in the same direction?
Unlike the US which has open access to the oceans for most of its two coastlines, China's single coastline is boxed in by numerous peninsular and island nations, and many smaller islands under foreign control. So China will always have to maintain green water capabilities even if it grows its blue water ones.