It is not the same. Having a jet do a low pass is something that you will remember for a long time. Or having it go vertical with full after burners, especially close to sunset where you can see it better.
The other factor is showing how good you are: sure, you can do formation flying in an Extra 300 or a C150, but doing it in a fighter jet show precission and skill, because it will not forgive you as easy as a slower moving plane.
As an aerobatic pilot that owns an Extra and has flown with several fighter pilots, I can tell you flying an Extra requires a lot more talent than a fighter jet.
> It is not the same.
I have seen so many military display teams. Yes, I like the roar. But they blur together.
> sure, you can do formation flying in an Extra 300 or a C150,
But that's not what we watch Extra 330s do. We watch them do other things that are nuts that are also not so easily forgiven. I have fond memories of seeing Patty Wagstaff, Sean Tucker, and Rob Holland (rip). (And before that, Amelia Reid in her 150...)