It's not just unpopular, it's also wrong: when you use drugs, you are almost entirely harming yourself (leaving aside funding all sorts of illegal activities, just focusing on the act itself). When you propagate CSAM material, you are causing psychological harm to the victims, plus can cause them to physically harm themselves or get harmed by others. So you are a criminal, harming a victim as well.

You can read about this directly from a victim via this NYT article: https://www.nytimes.com/2020/12/04/opinion/sunday/pornhub-ra...