You really shouldn't call other people out and say they're not being credible when you're literally calling people retarded and fucktards because they don't agree with you. In order to have a good faith discussion, I will clarify my statements further, and explicitly render your arguments invalid. I will do this line by line, so each point is easy to digest, and counter, if you wish.
The LP in question was demonstrably not written 'for the public'. This has been proven in this, and previous threads. I do not need to retread this further.
You assert that their work is not 'a real work', which is beside the point, and also false, given that there is the writing of several people involved, as well as fan art and similar.
Public domain does not magically happen if something is posted online. You harbor serious misunderstandings about what public domain actually is.
What is the 'purpose' of LPs and what does it have to do with someone reproducing someone else's work? Your idea of what an LP 'is' has no bearing on the reality of the situation.
Beyond that, the onus is on you to prove any of your assertions are cogent beyond "they're being mean because they want people to ask permission to use their writing!!".
If someone doesn't ask permission from the creator of a work and they go ahead and use it, this is, by definition, copyright infringement. Saying that this should be ignored because it's "a dick move", doesn't mean anything more than saying that a cop should tear up the speeding ticket he's writing because it's "a dick move".
I'm not going to sit down with you while you're spewing venom and insults and explain to you why they're in the right, and their actions are justified both legally and ethically. You've called them out, and haven't mounted a single reason based on anything other than personal opinion. I've proven your position false, and you're free to either concede, or continue having a fit even though the original poster has realized that maybe there's more to consider than "just do it already" when taking someone else's work and redistributing it without permission.