Tbh I'm not sure I fully agree with your second point. I don't think there is necessarily anything wrong with posting multiple times per day but there are some issues associated with it. Firstly, each article does show up in a persons feed. Maybe not in all front end platforms but it does in peakd. So it does bombard a persons feed a little, at times. More importantly though, I think the fact that most people have autovote trails sort of muddy's the situation a bit. Realistically, much of the rewards for posts come from autovotes. Even the photo you posted above shows that. It's not a coincidence that all four posts earned the same amount within $1 of each other. Reward pool rape could become an issue.
There's no judgement from me towards people posting multiple times a day, especially if they are effortful, but I am leery towards multiple posts per day consistently. If everyone takes this advice to heart I would be a bit worried about a situation in which, everywhere you turn, every community, you're seeing the same authors over and over again.
I'm not totally against it but there are things to consider. Just Food for thought and for discourse.
RE: 3 Powerful Ways to Ethically Maximize Your Hive Earnings, Faster