Bad advice. You want to have at least one managerial role on your resume before you turn 40/45/50 so you can get hired as you age, and being offered one is something that doesn’t happen often. It’s far easier to go back to IC than to hope someone offers you an EM role later. I say take it while the offer is there.

There’s far less age discrimination when you’re looking for management and strategy oriented roles. Those roles want experience, not the raw energy, output, and fresh skills of a younger IC.