So that is Anker’s conundrum, if you do that, then either you get different Watts per port based on the sequence you plug in, or they must turn off all ports when you plug in the 2nd / 3rd port and apply the algorithm.
If you look at reviews of how RavPower has done this, they do the latter and it scores negative on an existing device connected loses power when other ports begin being used.
Anker has always had very simple, but wasteful, algorithms in these multiports from an electronics perspective.
It would be cool if Anker asked us before product released, give us the options and we vote. Then what is released fits market requirements rather than the engineer’s guess.