This is because your understanding of the term RPG is incredibly narrow and stringent. Again, why are you interested in Fallout 4 when it is being developed by the very developer you claim makes terrible RPGs?
I think the setting and themes of Fallout are what make it iconic and special. War never changes. Not some arbitrary and outdated RPG mechanic from twenty years ago that most could care less about. Your problem is you see what is evolution of the RPG as "streamlining." You realize old school RPGs were largely stat-driven and less action-oriented due to limitations in latency, hardware, etc.? The entire turn-based genre largely exists because developers could not make real-time experiences in a compelling way. Stats such as block, dodge, parry, etc. were incorporated into RPGs because developers could not have the player physically do those things in the game. These features are still very much alive in the RPG, but they are concepts the player controls rather than some stat sheet to determine a character's "progression."
Intelligence as it pertains to Fallout is a ridiculous stat. The fact that any stat could provide an experience gain increase is by its very definition game breaking as anyone would be stupid (not a pun) to not put an ample amount of points into intelligence. Again, actions rather than an arbitrary number should determine one's "intelligence." I shouldn't be unable to hack a computer because my "science stat isn't 100" or my "intelligence isn't high enough." I may be an amateur or poor at hacking without a certain threshold, but that should not preclude me from the activity entirely. That doesn't even make remote sense. That is idiotic design and the opposite of intelligent.
I'm the kind of gamer who likes rational and well-reasoned game design that actually makes sense and moves the game play experience forward. I do not like clutter, fluff, or other means that merely deter or bog down the point of the game. "SPECIAL" is becoming increasingly irrelevant and its antiquated means are showing. You are more than welcome to maintain a narrow-minded perspective of 30 years ago while the rest of us realize times are changing.
You referenced pen and paper RPGs as their "evidence" that RPGs use an intelligence stat. I provided ample evidence that video game RPGs (cRPGs, JRPGs, or otherwise) rarely have such a stat for obvious reasons. Just because I happen to have a different opinion from your own does not make me negative or you "right."
I've heard this before. "Get rid of the isometic camera and the game is no longer Fallout." Well that already happened bud. Fallout is whatever BGS wants Fallout to be, regardless of your own "ideals." SPECIAL, like everything else, is subject to change or removal. The only thing that is constant about Fallout is the fact it is a futuristic America based on 1950s ideals that was massacred by nuclear destruction. Anything and everything is open to change.
I think BGS would disagree seeing as Skyrim is the most successful and popular game they have ever developed. Your own narrow-minded understanding of an RPG in no way proves "[d]umping stats in TES [was bad game] design." What it does prove is that you are in the minority and your understanding of an RPG is vastly outweighed by others.
I've been playing BGS games since Morrowind in 2002. I have played all of their games even going back to Arena. If anyone has an appreciation for BGS and how they design games, it would be me. I'm more than happy with most of the design choices BGS has made to improve their games well over a decade. If you are not happy, perhaps you should go back to pen and paper RPGs?
Intelligence is increasingly becoming irrelevant. The removal of skills and the removal of a level cap shows BGS recognizes the pitfalls of the stat. It may still be in Fallout 4, but he writing is on the wall that it will likely be removed come Fallout 5. Interpret "intelligence" how you like. It has never been appropriate nor made since in Fallout. I'd rather they just outright remove it and develop something that actually works.