Well, kinda, but based on the examples given, the data also includes assessments and assumptions about you presumably based on the aggregated information that is available.
They appear to be building recruiting profiles of github users based on their public GH profile and commit info.
But you just said they are all public data, it just happens someone spent the time to build a profile more "digestible". So in the end, really, this is public data.
I looked at my data. It's all public data anyway. I'm not surprised or concerned. Perhaps I'm missing something obvious?
Yeah not sure if this is dangerous in any way? Maybe this will allow me to get more stars on my Github profile.