Oh a rapist can’t be sorry ?
Spare me.
Sure they can be sorry. Many offenders like this repent, even, and find the Lord in prison. The thief on the cross repented and found forgiveness up on a cross. But his sentence was not commuted, and that is what you're talking about here.
To my knowledge Cosby has not apologized, and he's not guilty of mere insults. His crimes are much more serious, and he should serve his sentence. Insults are not illegal (at least not yet).
Scripture, interestingly, makes a big distinction here, that every Christian should note. Forgiving insults is a major theme in the Bible. Turning the other cheek is about overlooking insults (a slap on the cheek was a grievous insult in ANE times). We have the right to defend ourselves in the case of a violent attack, but insults are different. Overlooking insults are a key to righteousness, healthy relationships and cultures.
Prov. 12:16 Fools show their annoyance at once,
but the prudent overlook an insult.
What a wonderful world it would be if this concepts was embraced.