There is a particular reason not to agree ? I can refer to tenths of weapon systems which have no real firings for personel training ...
Just IMHO... I am not a specialist... How about your experience? Did you feel different when do live firing?
In SHORAD you "feel" the target .It is a matter of "you or him" but you can move or switch off... In medium range like HAWK ,there is a lot of respiration , waiting there ... But in Long range s300 covered by TOR M1,you are looking for engagement ...
Of course live firings are good of moral and a greate opportunity to visit Creta (NAMFI) and Chania city,especially in summer time ...