> So this only works on products that was developed before ~now.

You're under the assumption that the companies producing these give a shit about security. It'll probably increase a bit but I doubt it will be by much. If they have shipped devices that leave the doors wide open for almost any intrusion, they won't invest engineering/AI time and money to make these better than before and certainly won't review the code that the model spit out beyond a quick check if the promised base functionality still works.