The article doesn't provide enough information to make a judgment about it's utility.
No mention of copper thickness, achievable design rules, cost, etc etc.
On the evidence so far I can't see this process replacing etched copper anytime soon.
To displace the incumbent process it would need at least one really big advantage and no serious downsides.
MK
I suppose the advantage is expected to be convenience - like 3D printers are convenient even though the performance of the parts is not great. But yes downside are still present.
