Bethesda own a license to all mods created that they may use how they see fit.
If anyone here bothered to read the post you'd notice that they didn't just grab the esp file and throw it into fallout 4, conceptually, the two quests are very similar.
However, these two quest are also murder-mystery whodunnit quests, borrowing from a wide variety of tropes present within the genre, the characters & story are just the usual genre archetypes, so it's entirely possible two different people got the same idea from the same source.
All these characters the mod author points out are archetypes common throughout murder mystery stories, so again, this is more and more just looking like a case of two authors applying the same transformation.
Even if some inspiration were to be taken from this mod, the author seems to be
totally fine with it:
Now, now, truth be said, I honestly thought Bethesda’s staff played Autumn Leaves, had a blast with it (I hope) took some things out of it and made their own thing for Far Harbor. And I seriously think this is perfectly okay. After all, Autumn Leaves’ inspirations are countless (Asimov’s, Cluedo, Planescape : Torment, Arcanum, older Fallouts, etc.) and being influenced is a natural part of the writing process.
TL;DR: It's a fucking generic murder mystery quest.
Short story: I had a study colleague once who was a bit on the autist side. He was a really strange fellow and pretty isolated, but i thought he was okay to talk to and he knew his shit about the subject, so i was always friendly towards him. He also was quite entertaining because he flirted with every single female colleague and his flirting skills were like 0,0000000, as was his success rate. Anyways, i needed a script for an exam and he was known for making the best. I asked him if i could copy it and he said yes he will bring it to the university. The next day he "forgot to bring it" though, but he said he lived only a few blocks from the university so i could walk with him home and he would give me the script there. I was a bit worried about the embarassement of becoming a male rape victim, but i desperately needed the script, so i followed him. When we entered his flat, the script was neatly lieing on his living room table, conveniently placed right next to another script. He was like "oh, i forgot this here, its a novel im currently writing", and i suddently understood why he made me go to his place. He wanted me to "stumble upon his novel", and he wanted to make it look like coincidence rather than him running around showing it. Well, he told me to go over a few pages and out of goodwill i read some of it. It was mostly some vague super cool secret agent style badass conversation between two guys, not well written, and i couldnt make much out of it, so i had to ask him: Uhm cool stuff, what is the plot about? Then he told me:
It was about a professional hitman, a lonely guy who doesnt talk really much and who lives in a flat whos only companion is a cactus. The second protagonist is a little girl who's family was murdered by a corrupt cop who wanted to cover up evidence. She then walks into this hitman guy and he trains her to become a hitman herself. First hes reluctant because he doesnt like company, but he warms up as he becomes sort of like a father figure for her, but she also develops a romantic interest in him which he has to refuse because shes way too young. He then helps her take revenge for her family on that corrupt cop.
I was looking at him like this
. I then asked him if he knew about the movie "Leon the professional" and told him about the plot of the movie. He absolutely definitely assured me that he never heard of this movie and that all similarities are pure coincidence.
Point of my story: If there are that many similarities and somebody claims its pure coincidence, then somebody is bullshitting somebody. And we all know who likes to bullshit people and defend Bethesda.
Hello Todd!