I see this, not as falling out of love with personas, but more as a persona bubble. Expectations were inflated. We can welcome a return to the core of what personas offer.
This article from UX Magazine talks about the shifting opinion among UX professionals around the usefulness of personas. In the last 10 or so years, the blurring of lines between marketing and UX personas as well as the development of “half-baked” personas based on limited data collection diminished their status in the UX toolkit. But the article asserts that well-developed personas are a crucial part of good UX design. It outlines how to research and create data-driven, valid personas.