It'd be nice if the CPU graphs contained the y axis. The proportion is a large drop but it's unclear is that's 1000m to 100m or 4000m to 250m (a much bigger cost reduction)
It also sounds like their knative solution is slowly getting flattened into a load balanced or "smart" L7 proxy.
Also curious is they submitted these changes upstream. Seems like a pretty clear use case with numbers behind it which usually helps with interest.
Finally, I really love a solution that net deletes code and makes everything faster (and simpler).