Reusing stretch to yield head bolts is certainly a risky practice. Every factory Ford manual suggests new head bolts when replacing the headgasket. If a shop was not following factory recommendations I would go elsewhere for service work.
Why not follow factory procedures? To save a few pounds? This is just silly.

Using ARP head studs - nothing wrong using race type fasteners - IF the retorquing procedure after a heat cycle is followed.
For the very low power output of the cvh engine the standard Ford fasteners are well up to the task. (Even turbocharged out cvh engines are typically well below 75 hp per cylinder)

Cheers