The end of this article is particularly weird. Is it really suggesting that a good general rule is to optimise for business metric queries (which sounds like so

The end of this article is particularly weird. Is it really suggesting that a good general rule is to optimise for business metric queries (which sounds like something that would generally run daily during off peak hours or ad hoc when someone needs the data) over the most commonly run reads/updates (which sounds like something that will happen multiple times per minute for every active user)? I feel like I'm missing something because that seems insane to me.