I agree with what Tarnished has said regarding "invincibility" and energy gain.
In a combat aircraft display it is always a desire to demonstrate the maximum turn performance of an aircraft, both in the vertical and horizontal planes. With a g and AoA limiting FCS this is easily achieved with full back stick. However, employing full back stick in a vertical manoeuvre towards the ground means that you have no capability for reducing the radius of the manoeuvre. Is this a factor in these incidents? I believe that looping manoeuvres towards the ground should not be flown with full back stick.
One other aspect to consider is that in a straight-winged aircraft, looping radius on a pull through can generally be decreased by reducing power. In a high induced drag aircraft such as Typhoon, at low speeds looping radius may perhaps be reduced by increasing power i.e selecting reheat (your thoughts please, Tarnished).
Aircraft such as Rafale and Typhoon are markedly different to display than earlier generations of fighter. Company pilots have many years experience displaying such types successfully. Service pilots are new to them. Have all of the lessons learnt been passed on by industry or requested by the Services?