It is insightful because it's 100% true. If you look at Fallout 1/2 walkthroughs, you will see the kind of non-linearity, environmental scripting depth and general feeling of freedom that no modern game provides. Fallout 3 especially was a complete corridor compared to this. In programming and design alone, the first two games are still better than ANYTHING out there. There's a CHASM of difference between "walk anywhere you want" and freedom of player agency. In a walking simulator, you'll still have to go through a series of linear mission checkpoint with no alternate choices.
As for witnessing your own birth, it's just a cutscene, and one you have to do EVERY TIME instead of just having a simple character creation screen.
Also, what is the point of "experiencing the world", if Fallout 3's writing was the worst I've ever seen in a game written by supposedly English speakers? Really, the entire gameworld was designed and written by people who's only ever written code. The NPCs are lifeless tusks with no point to their existence, none of them ever talk like real people, nothing makes sense!
Fallout 3 was so dumb, in the end you have an NPC who is resistant to radiation, and he makes YOU go into the radiation chamber. He refuses to go himself, why? Because, "it's your path and yours alone". Wait, what?
And what about the horrible UI? Loading screens upon entering every hut? Terrible combat with unbalanced VATS system? "SPECIAL" being just numbers on the screen which barely have any effect on anything in the environment, VASTLY unlike the original two games?
Moira gets exploded by a nuclear blast, instantly becomes a ghoul, and then asks you to "Not do it again, okay?" Cars filled with fuel 200 years after the war? Oversimplified, cartoonish take on the factions from the originals?
If you look at any documented Let's Play thread of Fallout 3, and you have read at least 3 books in your life, your brain will start leaking out of your ears. It is inevitable.
At least New Vegas tried to follow canon and have an actual world, and it had a ton more content, a ton more choice&consequence, SPECIAL was actually checked frequently on various occasions. Some NPCs actually behaved vaguely human! In all ways it was a far superior product.