Is it just me or all the diagram images are broken? It looks like the lazy-loading is not working. I tried on archive.org and archive.is and same issue: the images didn't load.
Edit: yeah those images have their src attribute in the form of “lh7-rt.googleusercontent.com/docsz/[VERY LONG SLUGS]” and a quick look at the dev console shows that Google returns “429 Too Many Requests” for all of them.
I guess they just copy-pasted the URLs from some Google Doc and tried to hotlink them here? Interestingly if you access these directly (instead of embedded into Uber's blog) then they display fine and Google doesn't complain with a 429.