That's rarely the attitude of police in such a situation. Perhaps they've already been in touch with the airline or staff involved requesting further information and/or statements.
For the courts if the case proceeds to a plea, finding of guilt and subsequent sentence, the principle of 'general deterrence', ineffective as it may be perceived at times, is one possible aspect for the magistrate or judge to consider.
The airline may wish to deliver a public message that it doesn't tolerate (alleged) assaults, given there seems to have been physical contact.
Of course, we don't know the attitude of the staff: if they don't want to provide a statement, any case against the alleged assailant may collapse, or be rendered weaker.
The judiciary certainly take note of victim impact statements if these are included in the court book.