https://crestresearch.ac.uk/resources/mining-the-chans/

Recommendation #4: Innovative tactics

"Given the limitations of traditional tools, more out-of-the-box tactics should be considered. One such tactic would aim at gradually making these boards less interesting for their users.

One way to achieve this would be to regularly post content that looks genuine (using the right language, imagery, etc.) yet is meaningless – this would dilute the message of these boards and make their threads uninteresting, thereby reducing their attractiveness and sense of community.

Recent developments in artificial intelligence enabling researchers to automatically generate credible extremist sentences make such a tactic cheap and easy to implement."