Long time working at Cisco, I have seen many not so good individual contributors (IC) taking this FLM route to get promoted and become a manager. IMO this was the best route for these folks, else they would be out of a job soon doing the same not so well, in IC role. Most of FLM are poor technically and politically biased to manage people, often BS their way to have a team.
Another post takes opposing view as posted by @cg+1jh6c0v1r puts beautifully
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First line manager is a very risky proposition at Cisco (and practically anywhere)
You don't have any real management responsibility, that much is obvious. Doing 1:1s and talking to your team about the fake feedback provided on an "anonymous" survey isn't real management
They also aren't making technical contributions anymore - reading PRs is not the same as writing them
How do you tell your own manager they have made a terrible career decision?
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Comment please on your observations around choosing FLM promotion and hanging around doing a meaningless job just to stay employed, OR keep working in IC role.
Real promotion in Cisco is when they become directors, then they have powers to really sc--w someone’s career, put them on PIP, manage them out, or put their name for next LR. All managers are equally bad and hateful.