His sex crimes are unrelated to censorship or cancel culture. I agree with your non-controversial position that child abuse is abhorrent. I hope he is killed in prison. But I love his music, I still listen to it, and I'm not sorry for that.
The twitter mob against him that harassed Spotify into removing his music from their service is the literal epitome of cancel culture.
1. Take a consensus position (raping children is bad)
2. Repeat it over and over again, loudly, to make your actual point, which is that you are a good person. Not just because you don't rape children, but also because you are bravely amplifying this view that basically everyone holds
3. Make a public demand of a company that is tangentially related to the subject somehow, which if satisfied, will do exactly nothing to help or fix the problem
4. Form a mob of those interested in signalling their own virtue, who may or may not care about the motivating issue, to strong arm said company into compliance
5. Celebrate your hollow victory and briefly feel like you did something important (you did not)