I will say that, all those videos and other proof you speak of should be compiled and put in a post to support your cause.
That's been done there are several of these if not dozens.
That "Disclaimer" you posted (and the web page it is on) didn't exist until AFTER the community already discussed forking to exercise control over the stake, but ultimately decided against it, in part due to the stake no longer being powered down and hidden and instead left transparent in the steemit accounts, where the community could monitor it and measure performance in developing the ecosystem against cash outs of the stake. Why do you think Ned did that?
Ned unilaterally writing "These assets are the sole property of the Company" on his own web site in a self-serving manner does not make it so, nor obligate anyone else to believe it or agree to it in contradiction to years of representations otherwise.
I can tell you that I personally told Ned on numerous occasions going back years that I would never let him or Steemit off the hook for his commitments on how the stake would be used, and I will not.
If you came along later after Ned stopped using the existence of a block of ninja-mined (essentially premined) stake earmarked to the development of the ecosystem as a tool to recruit and encourage support for his project, and felt those disclaimers applied as a condition of your joining Steem, then that's fine for you, but I did not and they do not.