Re: Ah IT 'managers'
Sure a technical knowledge can be useful, and in a crisis good technical leadership is great to have, but it is not necessary to be technical if you have a great team below you.
But to collect and keep a great team below you, you have to be aware of and acknowledge your own limitations on the technical side, otherwise that team will either never collect or (if you became the manager of an existing great team) it will fall apart as at least some will leave looking for a good leader.