The comic is hyperbolic and not in a good way. "They wouldn't like it" - yeah, if millions of Americans did the same. And it isn't even necessary to go pre-digital or pre-internet to "cut out the middleman".
I agree with you on most, but this:
which includes driving a gas guzzler from the 70s, apparently?
is hyperbole on your part.
First of all, by-default internet connected cars haven't been a thing until relatively recently (10 years max I guess). And then, gas guzzling does not necessarily correlate with age. Cars consuming less than, say, 5l/100km have existed since at least the 80s (1st hand experience, and the car was already 20 years old at that point).