I'm playing W3 for the first time now and haven't played either of the previous games. I'm finding the combat and character progression to be enjoyable and overall the game is built well. However, the "shape the narrative" RPG elements have been pretty light so far, especially if I use Fallout 1 and 2 as a point of reference (though to be fair I'm only like 10 hours/2 hub areas in).
The tone is also way too absurdist for someone who prefers games that take their setting a bit more seriously, so I find myself agreeing with those above who have suggested approaching the game with a comedy mindset. Overall I'd rate this as a "B" game for me.
Wasteland 2-3 is based in the conceit (similar to Fallout) that the general population is extremely ignorant and extremely traumatized. The absurdist, lunatic behavior of large chunks of the population is propelled by this. For more sober minded "Law and Order" groups like the Patriarch/Marshalls and Rangers, wrangling together a working civilization out of disparate groups of madmen like the Gippers and Mannerites is like herding chickens.
A lot of these games lean heavily on the tiresomely-repeated Hollywood/tv trope, first majorly seen in
Deliverance, that rural US Whites are not just poor but crazy, racist, dumb, ignorant, etc.
I once knew an
extreme liberal who spent many years as a schoolteacher in one of those regions (West Virginia, Blue Ridge mts. area), and her conclusion was that while there
was a grain of truth to the myth, it was greatly exaggerated; she eventually came to love and respect the people of the region and did a lot of advocacy for them in her field.
A post-apocalyptic scenario wouldn't be all that different from the life they live anyway; as hardy folk inured to poverty, it wouldn't drive them mad. That's more like what would happen to some types of middle-class people thrust into that type of situation: IOW, it's projection.
(Side note: I had the privilege of having some traditional regional Moonshine on a visit, in a mason jar and the whole thing. It was crystal clear, and surprisingly smooth, lovely drink.)