Maybe adding cellular capability to the MacBook would solve your conundrum.
It would be a solution only if I was in a place where there was cellular access.
There are large parts of the world where there's neither cellular nor wi-fi available, and what do I do if my SSD goes south while I'm in such a location?
The new Great Equalizer is the SEND button.
In Memory of Harv: Those who can make you believe absurdities can make you commit atrocities. ~Voltaire