However perhaps the people who display this attitude are also the kind of people who like to remind everyone at every opportunity that they work for Google? Not sure.
My British don experience is based on 1 year of study abroad at Oxford in the 20th c. Also very smart people, but a much more timid sounding language (at least at first blush; under the self-deprecating general tone, there could be knives).
In any case, Google Cloud is a very different beast from the rest of Google. For better or worse. And support engineers are yet another special breed. Us run-of-the-mill Googlers weren't allowed near any customers nor members of the general public.