I think the point is that X years from now, when the servers are turned off, you don’t actually have the game.
Games shipping broken and needing day-1 updates is a consequence of our indifference towards physical media dying.
On the Switch and the Switch 2, I’ve never had a physical game that didn’t let me skip updates and play offline.
Probably due to a mix of Nintendo actually reviewing retail releases before they are “pressed”, and due to the fact that these are portable devices with no cellular.
I don’t understand the second part. Game key carts physically cannot fit the game or its updates, that is the entire point of their existence (storage is expensive, keys are tiny).
Experience the game, move on.
Of course, just my own preference, not saying others need to follow it.
I liked buying used games as a poor teenager and even poorer young adult, the only way I could afford it (and selling them once I was done).