Actually, it does claim this is the stable release channel. And it's reasonable to assume that if the author is documenting on a fresh profile / user account on the Mac, they probably downloaded the current (that day) release, though we're inferring when don't don't truly know for sure.

> 10. Code-signed, shipped through the normal release channel. This is not test build behaviour. It is Chrome stable.

I think it's poor form to run cover for one of the biggest corporations in the world like this. Don't let them off the hook. As the author correctly points out, metered connections are being abused. Hell, last month I somehow hit ATT's bandwidth limits on my mobile and got throttled for five days. It made my phone so unusable that I turned on hotspot on my work phone and connected to that over wifi when I went to lunch.