This is absolute nonsense. Management in many places cares enormously about productivity. What’s been a bit different here is a huge claim of improvement other companies are seeing (so you’re going to be left behind), alongside some developers going off and doing this anyway sending proprietary code hither and thither, alongside some devs railing against the very concept of using it. It’s also a wildly powerful tool and how to use it hasn’t been as clear (where does it provide value, where does it not, what can and can’t it do) so experimentation is really important.