It's politically embarrassing as attempted prosecutions of soldiers in Northern Ireland have shown. It all gets swept under the carpet, on a pretence it's not good for national security. If you prosecute successfully an individual there is a reasonable chance all military personnel involved could be successfully prosecuted is perhaps another reason it won't happen.

Using the military to prosecute aggressive military operations in an area the clear majority are unarmed, unprotected civilians again shows there is virtually no chance of prosecutions being taken.

Add to that the severe limits added to press freedom, to the point it's obvious the plan is there is no independent reporting, the repeated and systematic targeting of hospitals, ambulances, medical and aid workers, treatment of people detained, never mind densely packed civilian areas which in similar ongoing conflicts (Ukraine/Russia) would be directly called out as war crimes without equivocation, but are ignored, then is there even any point attempting to prosecute individual soldiers?

Seeking arrest warrants for those with most direct decision making powers is far more legitimate, necessary even. Demands for limitless, in all senses, military operations help no one longer term.