You know, it's taken me years to find out the deal with that diary.
As a kid I had like the first three out of the four issues. So it was all very "is it real or not?".
And that was not helped by the fact that Reed wouldn't goddamn deny it. He's all "Wait is this true? Maybe it is. Did I forget? Am I horrible? Did I do it? Aurgh angst! I can't tell anyone! The others hate me! Mopey-time. Then again maybe I should play with Franklin which is fun." I found it all very confusing.
Thank you for actually spelling out that it was Dooms doing, that clears it all up for me.