When someone has the power to help someone from immediate harm or fatal consequences it becomes a moral duty. It does not apply to God because he is the ruler of good and bad.
A father would do everything in his power to help his son even if it is against his son's will, unfortunately, one can only restrain a son for so long until he decides to insist on a harmful course for himself and also resulting in harm to others.
Ultimately God has to put a stop to it. Hopefully, people stop on their own. I have alwsys sought to understand if wickedness is actually a choice or a gene.
God can alleviate sufferings with billions of miracles but that would be like restarining someone temprarilty, BUt eventualy satan attacks again and some other suffering comes up, everything is inegrated and part of a bigger picture, the picture we are given in the Bible is resistance to God's Holy Spirit so that God's will is not being done resulting in harm and things require God's full control to end suffering as we know it. I try to reconcile suffering in my mind -very hard. Justice requires a personal answer or reason for suffering to each creature from God.