I had a team of data engineers that wanted to do more data science, and 2 data scientists that both wanted to be data engineers(one of them argued that everyone wants to be DS and so it was too crowded, saying that they could make more money as a DE).
I also remember a specific instance where, one day, my friend ranted about how he needs to step away from pure front end and that it's a dead end career (he was quite good at it too!) and then the next day at lunch a colleague started complaining about how front end developers get all the credit and he's considering moving.
I started my career doing mostly full stack work. I couldn't get away from the front end part quickly enough. I had intuition for simplifying UI flows, but none at all for aesthetics. As requests for aesthetic changes came in from our excellent designers, they felt completely arbitrary to me, even though they probably weren't. Most of my career was as a data engineer, data engineering manager, or leading an ML-heavy org. That space fit me so much better.
I loved having a few self-starting front-end devs in my orgs - they could take various tools we were creating for ourselves and make them quite a bit more useful. But it was also always a stepping stone as they typically wanted to work on the public facing part of the product.