The issue is that there's always some people who just never get enough. It's alright if you're getting rewarded for consistently and constantly contributing to the platform in meaningful ways but I'm sure a lot of you attempt to do it in easy ways.
Which is what 50/50 rewards doesn't incentivize contributing to the platform in a meaningful way, it incentivizes buying stake -> joining a curation trail -> get rewards lots of rewards because you are rich and were able to buy tons of HP(or got in early/cheap/minedsteem/etc).
Now if they are joining a curation trail that is manually curating and helps the platform by upvoting good quality content that is another thing and I am all for it, but trending/hot page has never really been that
If a WallStreet banker all of a sudden tweeted out "I am buying 10 million HP over the counter so the price doesn't go up, and going to get tons of rewards for joining a curation trail, never post, never comment, fuck yall!!!" the problem would be pretty obvious that it's immoral for some rich person to swoop in and make money off of doing this. It isn't any different for current whales/dolphins.
Right now you are downvoting people who get upvoted by people with large stake, who are doing just what I described, and you end up downvoting dozens or hundreds of random people because of it and that causes a bad user experience. It's only going to get worse.
50/50 incentivizes NOT contributing to the platform in any meaningful way, it DOES keep Hive staked so the price MIGHT go up. With 75/25 you could downvote the specific people who self upvoting/abusing, with 50/50 you have to downvote mostly innocent random people who are getting huge upvotes from whale accounts. I do expect more people to buy Hive and come here for the easy rewards over time. Eventually see that this platform will turn into the extreme milking we see happening on Steem right now, theres nothing really stopping it from happening. Steem and Hive are extremely similar, it will get to this eventuality.
Anyways, it's 1 whale being downvoted on 75/25 who makes 10 shitposts per day vs dozens to hundreds being downvoted on 50/50 who don't even know the whale upvoting them. I don't think i've seen anything more clear cut.
So you would have to excuse me for reading your post and believing that you DO NOT like 50/50, you outlined some pretty good arguments against it. Did you mean to do that? If not, your subconcious must hate 50/50 and is telling you something ;)