There seems to be more channels associated with Logan (Vakzy). I'm assuming these are hacked accounts. Maybe the hack might have not started with "Logan"? I'm not sure.
He also mentions that there are some trusted extensions, such as vidIQ or TubeBuddy, that asks for your permission to control your whole YouTube account. Although these are very widespread extensions, Muta has remarked that he has disabled TubeBuddy during this situation, so it may be a good idea for us to as well.
In my opinion, it is best to not interact with any comment that asks for friendship or partnership no matter the username at this point.