It's changing because of the flags. People don't use bid bots that much because they anticipate being flagged.

For example I flag only votes by bid bots (where I know that it is no manual curation)

Post rewards should definitely be set to decline or @null beneficiary in my view if using a bid bot (I've never used one btw so don't know how they work, just the effect on the trending feed pretty HF 21)

Exactly

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