I'm sorry. Did I say it was "bad"? The industry as a whole is trying to figure this stuff out, and Google is naturally at the forefront of a lot of it & therefore making lots of mistakes. Mistakes that hopefully later entrants will be able to skip entirely.
The only thing I was trying to point out is that one of their earliest mistakes was to use the wrong people for the job of SRE. Again, this happened before they even understood that SRE was something that needed to be created, so it's not "bad" in the sense of "worse than other places", but merely "worse than someone whose not been there might expect".