but at least in principle those promises have been delivered until Feburary 14th, 2020

Most likely not even that. I have no public information to point to or share, but I learned recently from a source I consider reliable that a great deal of the ninja-mine sold to date was simply paid out to Steemit shareholders (most of which, obviously, to the majority shareholder, Ned).

Clearly, Steemit Inc is a for-profit company and, arguably, some degree of profit distribution is understandable and expected ("arguably" because this entire enterprise has been a bit of a disaster, so one might wonder where the "success" came from to generate large profits apart from raiding the ninja-mine). But what has been described to me were "profit" distributions of a magnitude that were egregious and surprising.

I recall, I believe in 2018, when there were questions about Ned's leadership, a community member who claimed to be a qualified auditor estimated that $30 million had been taken out up to that point, a number which far eclipsed the stated burn rate of about $2 million per year and called into question the claims of financial distress. There was some vague push back against the number, but no willingness to provide any sort of transparency on what the real numbers might be, nor to explain why or how a qualified auditor would get something like this wrong.

Best if luck if you go ahead with a lawsuit. Probably not my cup of tea to go that route, but I can certainly understand it, especially for people who took large losses buying Steem while Ned was spinning and making empty promises to prop up the price of Steem just as Steemit was cashing out.