Blocktrades explained it that 24 hours is enough for curators to discover new content. And the drop in half in curation rewards after 24h is because you already have an idea how the vote is going, you haven't taken the chance to vote for a new post before it had any votes. After 3 days it's practically useless to vote on a post for rewards, since they are 1/8.
His reasons aren't wrong, but still sometimes you already "curated" posts but forgot to vote on them until you had time to read them.
That's a bit subjective and definitely not always the case, especially on weekends... It should be chilled surfing on HIVE and not pressure to catch everything in the last 24 hours...
I tend to agree. On the other hand, I understand his position that early curators who find and bring posts to the spotlight should have a bonus. But you have much more experience with this, and if you say 24h is not enough, then we may be not the only ones who find it insufficient.