There's no doubt that ARP head bolts are better than stock ones. The question is....are they necessary? A billet adjustable fuel regulator may be "better" than a stock non adjustable Ford unit, but if the Ford unit is performing the way it should, are you really any further ahead spending another $100 on an aftermarket one?
Like I said....the stock head bolts are more than adequate enough for moderate power levels. The ONLY reason I would upgrade would be because of the reasons outlined in my first post. For what he’ll spend on ARP head bolts, he could put the difference towards a better set of head gaskets or something else he really "needs", instead of something that would be just "nice to have"?
And again...unless the bolts are torque to yield, or damaged/worn in any way, or inadequate for the performance needs of the engine, it's perfectly acceptable to reuse the stock ones. Engine builders have been re-using them for years. I suspect head bolts are swapped out a lot of the time because of inflated, internet horror stories and misinformation than any legitimate reason.