Fallout Shelter sort of knocked into me the proof that a game doesn't have to be all that good to be addictive. As long as it hits the right receptor of someone who is weak-willed with way too much free time on their hands, it doesn't have to be fun at all, just good at hooking you in. Now, I'm not saying I'm weak-willed with way too much free time on my hands... well, that's kind of what I'm saying, actually.
Point is, mobile game logic is to get the player hooked into believing they're having fun with this cycle of madness. Fallout 4 is very much working under the same logic, so in that sense it's just
literally in the literal sense of the words, Fallout Shelter Borderlands, with a couple of extra gimmicks. I would say kudos to Bethesda for not adding microtransactions to the settlement system, but if they're intent in returning to old DLC habits plus introducing paid mods, then they're really just adding microtransactions without the name. I wonder how it will all end.
But back to the main course - Fallout Shelter isn't a real Fallout game to me, by my definitions. It's not an RPG and it doesn't have the same signature style that I described was present in the originals. There's probably parts for a good game hidden somewhere in the Shelter concept, weighed down by the garbage mobile bits, but even those parts couldn't make a Fallout game.
Hell, Bethesda could try and make the best exploration FPS game in the entire history of entertainment, and it could still be a very shitty Fallout game. Get that "shitty Fallout game" and "shitty game" are two
very different things. Fallout 4 just happens to be, by popular opinion here, both of those things.