I'm not so sure it's as simple as there is something wrong with the dog. On the one hand, they have been undeniably responsible for more attacks than any status dog before them. On the other hand, all of the publicized attacks can be pinned down to mismanagement or poor ownership.
The question we need to ask is are these dogs more prone to reacting to mismanagement and if so why? Or are there simply more of them than there were Pitbulls etc?
If we can decipher why this is happening we can start trying to figure out how to prevent happening with the next status dog.
Personally, I think it is a bit of both, poor breeding practices mixed with a massive boost in popularity due to celebrity interest in the "breed" with the added bonus of lockdown resulting in a massive increase of poorly socialized dogs of all breeds.
These poor animals are being dealt like drugs, by known drug dealers and criminals, in some kind of weird pyramid scheme. There was a documentary about it a few years ago (Panorama maybe?) Hapless idiots are being "leased" dogs they are told are worth tens of thousands of pounds on the understanding that they breed from them and the original breeder takes most of the profit. It is something that has never been seen before in backyard breeding and has resulted in a massive, sudden increase in breeding, and now the genie is out of the bottle it's going to be hard to get it back in.
They are breeding for size with no thought to welfare or temperament. The same thing is now happening with the Cane Corso and crosses thereof.