Pvc also dries out and cracks. But yes.

If it’s underground (meaning not in the sun) the lifespan of PVC is 100+ years. It seems unlikely it will be his problem if it ever cracks.

	▲	fulafel 15 hours ago \| parent [-]
		PVC used in water pipes had some surprises, the lifespan there turned out to be less than optimistically expected when PVC pipes came to the market. 100 years might be hard to test for...

You can always splurge on some military grade pvc conduits :^)