No magic bullet, supid management = stupid management
I read the link about DevOps, and that it means whatever it means. That means that it is snake oil and charlatanism. Really, "left-shifting security" as part of the right-hand side?
After all this time and good studies of planning, design, and development, why does everyone keep pretending that not one blighter out there knows how to write code??
Yes, it is a waterfall process: specify, design, develop, test, deploy. Nothing is fixed in stone, and every step can, and will, cause a jump back to the beginning. If you don't know what to develop, see design. If you don't know what to design, see specification. If you don't have any idea of the specification, maybe you'd best talk to somebody, see what they want, and give them feedback about their hallucinations.
It is true we can't be an expert in all areas. Right now I am working with a consultant who is allergic to C, and wanted to shell out from C to call a scripting language to make a REST call. Yes, really!
So yeah, there is burnout. Burnout actually comes from abuse. When the manager is the enemy, feel free to take a hike. I've done it plenty of times. Don't put up with it, feel free to push off.