Pace
"Safety recommendations like banning vintage jets in comparison to modern fighter jets which may I point out have equally caused loss of life on the ground must indicate that they have suspicions that the age of the jet was relevant to this crash."
No, the age of the aircraft is irrelevant. The temporary ban on Hunters will be to ensure that there were no underlying airworthiness issues in this accident; you can expect to see that ban lifted when the AAIB has completed its initial technical investigation.
As for vintage v modern, there are no modern fighter jets on the civil register here (except in test or manufacture) and the only ones on the display circuit are in military hands. The measure will be aimed at recency or currency, or whatever you would like to call it, and is a simple way of ensuring that, for the moment, high-energy manoeuvring is only conducted by those best suited for it. In broad terms it is a public confidence measure which means the only fast jets doing vertical manoeuvres in the UK will be military, and where the pilots will be flying the display aircraft day in, day out. The CAA does not regulate military flying, that is MOD's job.
The restrictions may be relaxed when the review is complete, but I suspect that will only be tied to some significant changes to base heights and perhaps to the display authorisation process too.