Seems like most of the issue is "fresh" durian. My definition of fresh is different from many of yours when it defines a durian.

It matters how fresh it is, ripe and fell off the tree that day or it has been picked and made a journey to where you acquire it.

Even in market in SE Asia where they are grown locally you cannot be sure how long the fruit has parted ways from the tree nor when/how ripe it was when it was picked.