Simply removing or changing things is not an automatic indication of "dumbing down". I would consider this move to be more like cutting out the fat that may have caused some flaws in the system.
In 3 and New Vegas, I didn't feel much synergy between skills and SPECIAL stats. The worst offender was being able to have 100 points in Speech, yet invest only one point in Charisma. Although Charisma and Speech were meant to compliment each other, they ended up feeling like two completely different stats. The same could actually be said nearly all other stats and skills (Agility/Sneak, Perception/Energy Weapons & Lockpick, ect.). Since SPECIAL stats mostly added points to skills, they became almost worthless once a player reached 100 points in the respective skills. Especially since any effects that would raise skills over 100 had no effect.
In this system however, everything is tied into one uniform system. Abilities that were once skills are now perks with multiple ranks. Acquiring "skills" such as Melee Weapons, Sneak, and Lockpick are now dependent on SPECIAL stats. If a player wants to be good with persuasion, they MUST invest points in Charisma while selecting perks to enhance the experience. If a player wants to be good at sneaking, Agility must be leveled up in order to pick the Sneak perk and become harder to detect. And without skill points, SPECIAL stats don't lose their value even after ranking up perks. This means that even if Sneak and Melee Weapons are fully ranked up, the effects of SPECIAL stats will still come int effect. While the system may seem restrictive, it makes SPECIAL stats, perks, and "skills" equally as important. In my opinion, this is more like evolving a system rather than dumbing it down.
I am not saying that your opinion is nonsense as you are entitled to your own thoughts. However, you seem very quick to dismiss a game based on changes you have yet to experience for yourself. I would suggest to at least try it before slagging it off.