Seems kinda misleading from Google to claim repeatedly that they are hosted just on the same infrastructure of GCP, and not go down with it.
EDIT: Switched from "dishonest" to "misleading"; while it's abundantly clear that Google doesn't run on GCP, GCP feels like a second-class citizen to Google because you just cannot get Google uptime with it.
(I'm a Google SRE, I'm on the team that dealt with this outage)
This did impact common infrastructure. Some (non-cloud) Google services were impacted. We've spent years working on making sure gigantic outages are not externally visible for our services, but if you looked very closely at latency to some services you might have been able to see a spike during this outage.
My colleagues managed to resolve this before it stressed the non-cloud Google services to the point that the outage was "revealed". If this was not mitigated, the scope of the outage would have increased to include non-cloud Google services.
there's a lot of infrastructure at Google. And claim is correct - GCP and Google is on top of the same servers, same backend systems. Are they on the exactly same servers? No, of course not -- there's a few servers out there :-)
This was a global network outage, we can't talk about the "exact same servers". There seems to be an implication that Google runs on GCP and a global network outage can't affect all GCP's customers but one.
EDIT: Switched from "dishonest" to "misleading"; while it's abundantly clear that Google doesn't run on GCP, GCP feels like a second-class citizen to Google because you just cannot get Google uptime with it.