Shadowbanning is real in the ATmosphere network. It currently has a 7 days expiration; automatic or you triggered it; meant for suspicious activities.
If legit people are talking about it because they got hit = high false positives = it's unnecessarily aggressive = additional load for mods.
https://oyster.us-east.host.bsky.network/xrpc/com.atproto.sync.getBlob?did=did:plc:bpotnohnlgcj3fbmp7ugx4en&cid=bafkreiat53hd2mh6paswgsidus5uyjpjqilj3me624he4w2wtwmizznp2a