Yes although i do agree that this tank swim is still a viable opition in terms of Taiwan scenario but any true blue water navy needs to establish 3D over the horizon amphibous assualt capability, this is why USN has V22 etc
conventional assualt are slow and you dont have the element of suprise, over the horzion allows for rapid attack, limits the enemy to counter attack and also allows u to out flank the enemy
at some point China will need to add this capability into its navy, and LPDs are not just limited to use for landing forces they also serve as very good command and control platforms
if China establishes 4 x Type 071 LPDs, this means around 3,200 marines, thats a pretty big naval brigade , i believe each LPD can take 4 x Z8s and 2 x Zubrs
so in a single wave 4 x Z8s can carry 100 marines and each Zubr carrys what 50 marines? so thats 200 marines in a single wave using air and cushion launches
4 waves from 4 LPDs simultanouslsy lands 800 marines, a serious punch into the enemys defences, a night time assualt would add further advantages, so we can see the advantage of LPDs and for that matter LHDs which could provide attack helos for cover for the Z8s carrying the troops
after securing the beech head then the Type 072s can land in the slow moving tranports etc all indications are that China is turning towards this kind of warfare