Those pedo sites he was accessing, could very well be traps set up by police enforcements as well like what Australian police were doing. They set up those websites with trackers and uploaded the questionable contents to catch fishes for digging money from the public just like the recent frequent raids.

Remember there's no demand if there's no supply.
Think of it as similar to the drugs market. Who could be the real kingpin or boss?

Commercial adult sites should be fine. But do be cautious. Many of them are actually operated and funded by enforcement agencies because of the money similar to drugs market as well as to do social experimentation.

Some of them even set up honeypots such as fake torrent trackers, just to accumulate information on seeders.

You see if these adult sites and questionable contents are not own by enforcements, how do you think they're allowed to plant trackers in them to detect visitors? Of course you need control and access to their administration panel to implant such tools.

Honey pot set up by "hantu dalam"(insider).