Yeah, I think we could go back and forth on that for eternity. Pretty much any bar of steel has been forged somewhere down the line. A stock removal guy can purchase a san mai billet or a damascus billet then grind the knife out. I highly doubt he would advertise that knife as "forged" even if he bought it from a fellow bladesmith that made that damascus by hand. I have even sold a bar of damascus that I made and the stock removal maker wanted me to forge the point in, which I did. What then?
In many cases with damascus, people try not to forge it too much in order to not distort the pattern more than they want. But they may have spent 10 hours forging a very complex pattern in that damascus. I think that is one particular case where the line is a bit blurry.
Everyone has their own opinion on this topic it seems. For me, a forged knife has forged bevels. And the reason that's my personal criteria is that forging in the bevels makes my life a lot easier on the grinder and I don't like grinding. Having a nice already set bevel that I can lay up against the flat platen and work off of, makes the whole process much easier and reduces the amount of grinding significantly. It is a big reason for me forging in the first place.
Even with that being my criteria, someone could have blanks waterjet/laser cut then forge just the bevels from that point. I think we could go round and round on this topic. There just isn't a single definition that determines whether something has been forged or not. At the end of the day, if the customer is really that interested, he will ask and the maker, hopefully, will be honest and explain the process to him. And that's really all that matters.
Edit: This brought up a memory I had. I was selling some knives a local arts/crafts show and some guy walked up and asked me if I "cheated" forging my knives. I told him I didn't understand what he meant and he said he was sure I did. Eventually he got around to telling me what he meant was if I forged everything by hand or if I used a power hammer at all. In his eyes, using a power hammer was "cheating."
Cody