Who's forgiving whom?
Scrooge doesn't "release past grievances" in the story. He is sorry for his own actions after seeing certain scenes. He is contrite. He recognizes he is on the road to ruin and that no-one will mourn his passing. (It's likely that not everyone we have ever encountered will mourn our passing. A percentage will be glad we're gone. Not everyone likes everyone else; not everyone likes everything everyone else does.)
Those he treated harshly did nothing harsh to him. He was antagonist. He then reconciled with others.
Nothing "harsh" here in a medium that exists for one reason. To say things there is no other way to say. Things need to be said and said repeatedly. Over and over. Many times. Are you getting this? Is it sinking in? No? Repeat. There has to be a coda of cognition.
Things had to be said harshly because without cognition, there could be no contrition.
Without contrition there could be no reconciliation.
Forgiveness might be in there somewhere, but who's forgiving whom?
Forgive yourself first, then forgive others.
Put on your own oxygen mask, then help others put theirs on.
Feeling "hurt" is a selfish thing. It's a perception, not a reality. We choose to be hurt or not be hurt. We choose to hurt or to not hurt others. Nothing here is said to hurt. It's said to heal. All healed up here. It's good to be a quick healer.
