That is a good point.
Don't think many people see this side of Giorno, but while he has his own rules and is helpful to those he considers friendly and protective of those he consider innocent, he had no scruples about stealing money from tourinsts and even Koichi's full luggage - and that was both before and after finding out he has a Stand.
For his goals and to protect his allies, Giorno would willingly cut off his limbs. But while he got
extremelly angry at Cioccolatta and Diavolo he still barely batted an eye at the people being affected by Green Day and Chariot Requiem.
He is
very much like Remilia here, just instead of Emi or the prince (in the original story) what guides him is the ideals given to him by that gangster that he had saved in his childhood.