it’s a meaningless term that can define dozens of roles
But the whole point was that it wasn't a separate role: it was a re-distribution of work so the developers were doing operations. Instead, a lot of people entirely missed the point and just renamed their ops people to devops.
and devs almost universally end up not wanting to do that
in the age of agents I found myself loving frontend again, loving devops again, loving email servers again, you name it, I suspect in most cases those roles will merge into one (excluding the ones needing extreme competency and trust).