Anecdotally, I have seen up close what it looks like when suit-and-tie MBA types start looking for the emergency exit, and this smells right.
BUT
What I don't know would fill volumes-- whaddya got?
[1] https://papers.ssrn.com/sol3/papers.cfm?abstract_id=2955455
[2] https://www.gsb.stanford.edu/insights/silicon-valleys-unicor...
Nowhere did I find reference to the economics of Uber justifying their valuation. I should clarify my point: I don't think Uber is worth what they think they're worth based on the fundamentals. Certainly a bunch of tricky contracts could exacerbate that, but I think everybody bought into Uber at a valuation they were never going to sustain, and the ship is slowly crashing back to earth.
Because they're trying to shape the battlespace of public debate to create the best possible conditions for a resolution of this standoff in a way that gives them liquidity for their investment at a valuation approaching Uber's last round.