he didn't live all of Vincent's life. I think majority of the life he saw was after Vincent left
Coincidentally, Dwight's current actions were quite rude and disrespectful. If it had been any other leader before him they would have made a fuss, perhaps even accusing him of being interrogated, but Quinn wouldn't know any better.
if the author is going through some personal stuff I hope things get better soon. it's understandable that things happen, but it would also be nice for us to know if the story will continue. hope all is well