In many previous threads you have argued the same thing. For example, this is your post from 2012.
ISTM that this is a pet point that you have argued for forever, but haven’t won any converts.
You say that your point is that there are “there are many different ways to conduct a successful amphibious invasion”, which of course is true as long as the enemy cooperates with you, or is in complete shambles, ill-equipped, poorly lead and unmotivated, as were the units of the ROC army in Hainan in 1950.
What are these “many different ways”? Your suggestion of loading a huge number of troops and throw them across the water is suicide, especially for an island 100 km away. If what’s written isn’t your suggestion, then what is? Specifically?