It's one of several techniques they can apply, at least. I for one don't even know why there's a forgery market for ancient pottery, or that there's a market for it.
> I for one don't even know why there's a forgery market for ancient pottery
People have paid top dollar for archeological artifacts for centuries. Humanity lost a lot of knowledge from graverobbers, illegal artifact hunting and unreported thefts of stuff getting exposed after stuff like forest fires.
> I for one don't even know why there's a forgery market for ancient pottery
Because people desire owning ancient pottery and are therefore willing to pay for it.