Devops is not a position in itself. It’s supposed to be a software development and operations philosophy
This is the definition I know but unfortunately the term seems to have become a modern synonym for system admin/engineer.
Such a role might still provide valuable experience for a backend dev if there’s an opportunity to write production code for internal tools as well.
Developers at my company need to have a deep understanding of the environments they deploy onto (microservices, scheduled workflows, etc.) which can include configuring canary testing, rolling deployments, status probes, setting up and using monitoring, and very occasionally intervening to restart or redeploy running software. But these are secondary skills compared to writing code.