About the criticism F4 is receiving:
As much as I do love Fallout 4 for its strengths (The combat, the atmosphere and the world), it did lose out on some of its in-depth RPG elements. I did not dig the new dialog system and I still believe that it was a bad idea, and the constant amount of killing and fighting made it a little less meaningful. And the large amount of missed opportunities (Thankfully, the DLC is clearly going to improve on that).
However, does that mean that it is a bad game? No. It's just different. In a world where yearly franchises keep coming out with the same basic structure, where new IPs simply take the mold of older ones (Mad Max, I'm looking at you), some changes are needed to keep things fresh. While there will be the occasional bad overhaul, it doesn't invalidate Bethesda's Fallout. If you are so desperate for a post-apocalyptic CRPG experience, Wasteland 2 is going to give you exactly that. Niche games are not going away.
And yes, the crazy ass amount of comparisons between the Witcher 3 and F4. Both games are equally good in my opinion. W3 has an emphasis on characters and story, while F4 has an emphasis on combat and world-building. Not to mention that the W3 isn't as deep as its fanboys claim. There aren't a lot of variations in combat in the W3 to say the least, not to mention that the dialog system is nearly the same compared to F4.