"Post 10+ times a day for maximum growth"
Verdict: DISCOUNTED IN CODE
The author-diversity decay multiplies your Nth-best post in each viewer's session by (1−floor)×decay^N+floor — your own posts compete with each other, per viewer, every session. Volume also raises predicted mute/not-interested. More posts help until the decay + negative heads outrun them; the curve is in the code, its constants are not.
The code
home-mixer/scorers/ranking_scorer.rs apply_author_diversity()/diversity_multiplier().