Physics Subreddit Spam Ate the AI Education Signal

The structural problem here is not that AI education lacks activity — it is that the subreddits where physics students and educators once discussed pedagogy have become targets for AI-generated spam and cross-posted pseudoscientific content. When that spam floods a community and gets removed, what aggregation pipelines record is a hollow volume spike: posts existed, removals followed, and the substantive voices never had a chance to speak. The broader pattern of AI spam degrading Reddit's community value has already cost several technical subreddits their function as genuine knowledge communities —…