To Vigo or not to Vigo? That is the question.

That's not true! Not for all games. I wrote them when I wasn't at my computer or was in a place where I didn't have access to a computer, or couldn't, but I still needed to submit something. Besides, Vitalik is the one who spends the most time with me out of all my friends, and he often watches my streams and gives me advice, telling me what to do and how. Naturally, he also remembers parts of the game and what I did. And when I ask him to jot down a report for me, I dictate what I remember, and he might add or change things, since he also watched the game.
Many players write reports for each other, both about victories and defeats. There were times when they specifically asked someone to write a report for them, saying something like, "Write it for me," and there are such posts on HW, but I won't look for them now, it would take too long to sift through five years' worth of report pages.