To me Personas can be useful in understanding Marketing groups, but tend to fail when it comes to solving user problems and creating a better experience.
I agree they are useful in certain contexts. My company did a lot of work to make some very well-done personas with plenty of intelligent research, but I rarely need them to truly solve real user problems.
I'm much more into the "Jobs-To-Be-Done" mindset to create user stories and empathy (one of our Researchers also called it purpose-driven design, which I like):
"I am a ( role) I want to ( activity) because I want to (purpose)"
So for me, Personas are a "Nay" when it comes to UX, but "Yay" for things like marketing and understanding your general customer segments.