Doesn't this person's stated purpose violates GitHub's TOS?
"If you would like to compile GitHub data, you must comply with our Terms of Service regarding scraping and privacy, and you may only use any public-facing User Personal Information you gather for the purpose for which our user authorized it. For example, where a GitHub user has made an email address public-facing for the purpose of identification and attribution, do not use that email address for commercial advertising."
https://docs.github.com/en/free-pro-team@latest/github/site-...
Making an email address public-facing for the purpose of identification and attribution != cold email me. Using an attribution email for the purposes of contacting someone is not an authorized use.