They might just be an anonymization thing. Abstracting the names into codenames/shorthands might make easier to understand "who"'s doing what without revealing any names.
At least, that's what I would infer is the purpose based on what I was reading there.
I thought so, but the first phrase makes no sense:
And Alice that Bob had eviscerated …
So it’s gotta be something else they are reacting as well and not just names. What makes it more confusing is that Alice and Bob above are both P## tags.