I can't have the same opinion. There are already incentives to having high HP. The higher it is, the bigger your upvotes, which means bigger rewards for your curation. Nice upvotes also come with a notification which helps attract attention to yourself. If your post is good it deserves to get rewards because that's already a contribution to the ecosystem.
I don't think it's comparable to the extraction of bots. Bots don't experience joy and don't have time constraints so they can play as much as possible. As long as there's a tiny fraction of profits, they will keep at it.
It was certainly personal towards Zaku and it's terrible. There's no justification for it. To hurt Zaku they decided to hurt the poster and every other upvoter, including Splinterlands. And why do they even care, it's the same payout. Zaku takes more, Splinterlands takes less. The DV just means everyone in that post takes less.