Hardened valve seats - do they really matter?

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I remember when the "clone" aka "tribuite" showed up at BJ, Mecum. 69 383s Roadrunners being cloned out of sport furys/ I asked myself WHY? They made what? 85,000-95,000 of just the 69 mode. Real 69 383 RR where top be had, easy and not that man y $$.
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3000s, 40s classic made into Good Guys street machines or what ever you call them. Look at what the few that sell at Mecum bring in general.
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Them comes the resto mod/"protouring" type animal. The guys into the reto mod want the old style bod on a modern driving auto. Why?????????? (yea I knpow!) BUT.. Why not just drive your modern hemi powered 2000 Charger or 2002 HellCat??????? if you need modern? OK so I am OLD.
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