Any pipe will split when frozen. In freeze country you winterize (blow out), simple as that.
PVC vs. poly pipe is a regional thing that mostly depends on soil type, and thus, availability of the full range of fittings. The myth of PVC (or poly) being more susceptible to freeze is about 25 years old. You freeze it, it splits.
In sandy/loamy areas they can plow in poly. In the West they trench and put rigid PVC. If you have the full range of barb fittings available locally, and soil permits, I like working with poly... but where I live it's trench, and put in 20' sticks where applicable.
I have been doing a bunch of the latter today. I would like to see someone run a vibra-plow in this soil.
And yeah, that is an old thread....