In my experience most managers were promoted because they excelled at technical skills and were at the top pay level of that field. So promotion to management was the only way to reward their good work. They had no expertise as leaders and that showed itself very quickly. So we lost an expert technician and gained an incompetent manager all at the same time.
I declined an interview for a position when I learned it was not 'technical' as I thought, but was a 'team leader', which I would have both hated and done poorly. I never once regretted it.
"First I bought an apple and sold it at a small profit. I used the money to buy two apples and repeated the process until I was trading with many more apples. Then a rich relative died and I inherited a fortune".