I think you have buried the lede, which is that these platforms are no longer about an acceptable good. Votes or in twitters case, engagement metrics, are just one part of the magic mixture that drives more engagement. It's not about fair outcomes, or social good, and it is hard to hide your engagement optimisations when everyone can see how you are tweaking the system to generate more ad revenue. A cynical take I know, but we are taking about billion dollar corporations, not cheeky startups.