I don't see an issue with it really. It will only drop in places they added it to, and most of those already had alot of 'junk' or mundane loot that was able to drop, so I doubt its going to make much of a difference. And at least now its something usable to someone, instead of just junk to vendor to an NPC.
I'd like to see them drop a little less, as EO said though, just so people can't go to port-bounties to farm "Gold" or "platinum" ingots, instead of actually having to go farm a rock for it.
I have yet to see if these items have been given a gold value, I just worry that with an increase in dropping, people will be less careless in selling it to vendors and perhaps re-buying it from vendors to sell/give to a crafter (You know, one person just selling it as loot, and the next saying oh! platinum, I'll buy that to sell to my smith friend!! or something)... Before, no one got platinum or gold or other rare craftables without them being a crafter.. so wasn't really an issue with these rarer crafts... just don't want to see unusable reagents start to filter in because people that don't know their use buy/sell them to NPC vendors.