Ye no. The reason is not Javascript framework churn. I feel the notation that the software field change fast is a MBA take on it since the in fashion key words change name all the time. I guess the underlying reason is that engineers wont be promoted to (real) chief engineers with agency. Being a boss requires reports for some reason. So experienced people leave sweetshops to escape the grind when they get fed up.
Big tech that I work at generally doesn't have MBA type managers and it is good.