Ah, they gave the account name. When you said "asked them for the guy" and "they just gave it to me", I was interpreting it as the guy's contact info and them

Ah, they gave the account name. When you said "asked them for the guy" and "they just gave it to me", I was interpreting it as the guy's contact info and them just giving it to you, which is what was raising red flags for me. Yeah, it's much less problematic if they just let you use the name of a discontinued account (as long as the github single-sign-on stuff keys off an ID and not a name, which I assume it does).