The hackers have AIs too.
This doesn't make everything secure. It turns the universe into what we see in Star Trek, where everything is hackable all the time by everyone just by trying hard enough, or, in the real world, spending enough. A lot of the utility of hacking systems can be obtained in running off with the data so the inability to use a break tomorrow is not necessarily a problem, especially if I just ask my magic code fairy for another break tomorrow and the remote system has, to a first approximation, learned nothing from the previous breach as it busily churns away.
This is not the way. In fact for secure software I'd happily testify in court as an expert witness that this would be criminal negligence.
As for how closely it matches what Anthropic is doing, no comment. I'd need a lot of time to look at that and decide. That they can write code easily I do not question, whether they have 100GB of problems or 2GB of problem and 98GB of garbage that is slowing down even their AIs is not something we can get from a happy PR puff piece. I'm just speaking to the idea of letting code mutate wildly and constantly.