You appear to have worse than average luck when it comes to flat tires. When I got my 1996 Saturn, I did not like the donut, compact spare.. so I went and found a regular rim, and put a full size tire in there which doesn't quite fit, but it has been there now for 22 years, and it has not been used, ever. Granted a much lighter car than the Gen 1 Diesel Cruze. I have one still and had another. Clearly the DEF tank was a quick fix for Gen 1, Gen 2 has the same compact spare as the Gas model. Those that have deleted emissions on their Gen 1, some have pulled the tank and made room for a compact spare. That said, if you had a spare, it is possible you'd never had to use it seems Murphy's Law knows you well.
Lastly, I would not be so sure GM had anything to do with the tires, nor susceptibility for a flat, most modern tires are very resistant to flats, and those Goodyear high efficiency tires seem to not be an exception. What pressure were you running? If GM screwed up, I'd say it was there pressure recommendation of 38PSI on a tire rated for 51PSI. I run about 49-50 in mine, so far, no problems.