I have an explanation (or rationalization, if you wish) for this.

The AI caused the developer productivity to increase (similar to other two big SW engineering productivity jumps - compilers and open source), which gives them more leverage over employers (capital). Things that you needed a small team to build (and thus more capital) you can now do in a single person.

In the long run, this will mean more software being written, possibly by even larger number of people (shift on the demand curve - as price of SW goes down demand increases). But before that happens, companies have a knee-jerk reaction to this as they're trying to take back control over developers, while assuming total amount of software will stay constant. Hence layoffs. But I think it's shortsighted, the companies will hurt themselves in the long run, because they will lay off people who could build them more products in the future. (They misunderstood - developers are not getting cheaper, it's the code that will.)