Comment by sam_lowry_

You probably don't use Telegram channels much. There are some drug and prostitution related channels you can search for but they disappear rather quickly or are totally empty.

Christo Grozev shared screenshots of a few CSAM channels yesterday, but if you search for them, they do not seem to exist.

Telegram clearly does less pre-moderation than Facebook, but they are smaller and have less computing and they do not seem to rely on the masses of Nigerian moderators that work for 5$/day as Facebook does.