W O W, really ?
While it may be read as some sort of Jealous screed, I have observed similar behaviors from people who fall under this collection of traits. People that might at first be seen as having accomplished a lot, but on further examination, its maybe a few things, and the rest of the things are generally exaggerations.
To a certain extent I understand the need to self promote if one wants to continue to work on OSS but without corporate sponsorship/funding.
His LinkedIn says he started at MongoDB in 2011. The first commit to Hugo was in 2013, a full two years later. Your story doesn't add up at all.
He left in the middle of 2014. He was checked out for a long time. I'd say that timeline adds up pretty nicely.
So while Steve would like take credit for Mongo's enterprise adoption he barely had anything to do with it. Not with the Server, not with Cloud, not with Sales, Marketing or Education.
In terms of proliferating Go I think that statement is fair. spf13 is like brand name in open source.
I recall years back on GitHub, spf13 was like a name you were guaranteed to come across if you were sinking your teeth into Go. I ended up using cast / viper: https://github.com/tony/vcsync/commit/a76681b. (Not that I'm anything special at golang)
No doubt his contributions did in fact help that process, but as I read it, the claim asserts him as the driver of that process, which he was not.
Did you not read the post?
The post is full of evidence of the things that he did or the team that he led did that drove Go's growth.
He definitely was a major contributor to Go's widespread adoption both as an OSS contributor and as a project leader.