I don't agree for one!
It all depends on what you are doing/flying.
I used to display something where we were not cleared to carry out aerobatics but we would get 60 degrees nose down at 200'
Airbus 30 degrees up is abnormal. F22, not so much.
I think people are getting hung up on irrelevancies.
I don't know, though I have my suspicions, what went wrong with this display, but I guarantee that the problem was not lack of energy during the pull up due to having to climb to 500'
I have not flown the Hunter but I strongly suspect it has enough power to maintain speed with 30 degrees nose up.