Gold's blanks are not made by Kitada and have not been for a while.
These blanks are just an option offered to customers to start from a completely blank canvas. Sasaya doesn't care what anyone thinks about him making blanks or not, he modifies putters. He never milled them from a block himself.
The whole "made by" thing, well that's a can of worms. there are products stamped 100% made in USA that have materials from China. There are products that don't say made in Japan that are 100% made/materials in Japan. There are products are made in China that have a process completed in Japan that say made in Japan, every brand slants it a different way.
Robbie... made you an avatar :)