Originally posted by Theta Helion:

...Frostner was imo the best weapon to kill Bonemass

Which is why the devs made it so players can't get it beforehand.

Originally posted by Theta Helion:

...decision to punish a player who found silver without the Wishbone by removing a crucial ingredient. :(

Exactly.

The devs don't want players getting creative and leap frogging the tech tree. I had one world where I had a tame Lox, a bunch of tamed wolves and some Wolf armor before I finally faced Bonemass. *

I expect that they are going to keep tweaking the game so players will have to follow the path that the almighty Devs think the game played by. Next they will probably make it so players have to make a special pickaxe with Ymir flesh to mine Silver too.

* I died a LOT doing it, but had a lot of fun too :)