I'll boil down my opinion and interpretation on all of Fallout 4, just for the fun of it.
Bethesda's target audience isn't the kind to care for suspension of disbelief. You don't try to ask yourself "why" and "how" about every person, building and equipment you come across in an action game, do you? Fallout 4 is an action game, through and through, not an RPG.
I like action games, and I don't hate Fallout 4 for what it is, but I don't think an RPG had to die just so we could have another action game that we already have hundreds of. Especially when it's just done purely for profit - presumably.
That's it really. Now the verticality and urban warfare I approve of, simply because I don't believe Bethesda shouldn't even try to make their next Fallout an RPG anymore. If they can't make an in-depth RPG, they may as well focus on what they're good at.