“AI” has for recent memory been a marketing term anyway. Deep learning and variations have had a good run at being what people mean when they refer to AI, probably overweighting towards big convolution based computer vision models.
Now, “AI” in people’s minds means generative models.
That’s it, it doesn’t mean generative models are replacing CNNs, just like CNNs don’t replace SVMs or regression or whatever. It’s just that pop culture has fallen in love with something else.