cooked pineapple sold as fresh? WEIRD

Sometimes when buying fresh pineapple it happens to me to find out that what seemed to be a very ripe pineapple is actually a lot sweeter that pineapples usually is, and it does not leave the stinging/burning sensation on my mouth ( isn't that a clear sign that it does not have any live enzymes?) The leaves also looked a loot wilted and the pulp is not crunchy & firm, but tangy and soft like canned pineapple!
Is it possible that they "pasteurize" or cook whole fresh fruits, in order to kill some mold or parasite maybe, and then sell them as fresh??

I am sure these pineapples have something strange. Tweet