As for time and trouble to replace the firing pin, there is plenty of info on this if you google relevant phrases. Try problem with Savage 219. Broken firing pin Savage 219. And similary phrases.
Consensus appears to be: The design of these rifles was very complicated and not user-friendly as to repairs. Most gunsmiths have never done a firing pin replacement on these. Many people have taken them in, and after looking at the schematic, the gunsmith just hands it back and says it would take 2 to 3 hours for him to take it apart and get it back together again, and at $60 to $80 an hour for smith time, it would cost more than the rifle is worth.
Folks who are competent do-it-yourself gunsmiths generally report that it takes about 3 hours to do the change out, and after getting the thing put back together, they never want to do it again
The firing pin problem is not a myth. It is generally reported as a condition by everyone who has ever owned one and shot them with any regularity, even by folks who love the rifle.
If you really really want one, they are pretty easy to find in .30-30 . The ones in .22 Hornet are rare and have recently become collectible because of it (if they are in really good condition.)
My advice: If you have a strong urge to get one of these, take two aspirin and go to bed until the urge passes.
These weren't regarded as quality firearms when they were designed and sold, and they aren't regarded as quality firearms today. Edsels were and are widely regarded as the worse car ever designed and sold. The fact that they are collectible today doesn't turn them into good cars.
Regards, Mannyrock