For some I agree. But the response to the "I'm comfortable in my role" one I really dislike.
It should be fine to be satisfied with your position instead of having to eternally strife to a reach a higher step on the ladder. If that's what somebody really wants, it's ok and they should go for it. But for others that mindset will just end in a burnout and it should be applauded if they are able to recognise their limits. Work to live, not live to work.