Has this other evidence even been presented yet?Yes it has - or at least enough that the judge found it compelling. I'd speculate it was something like download logs or something. From the reporting of the story I've read there doesn't seem to be anyone arguing that Lewandowsky didn't access the files. The question seems to be about if they made it to Uber.
I any case I don't think that is relevant to the question regrading the 5th amendment, and I suspect that is why you are being downvoted.
Lewandowsky and Uber's interests don't align here. It's pretty easy to see a scenario where Uber loses this case and then sues Lewandowsky.
Of course Uber wants Lewandowsky to give up his rights here. Lewandowsky has some pretty complex trade-offs to consider.
given that even a simple question was downvoted, I can only conclude that there are likely a lot of Google employees downvoting anything that doesn't support Google's side in this dispute.
I'm not sure how you figure that. I'd imagine it would be Uber employee's downvoting you, since your question really shows the big problems Uber is facing.