Earlier quoted context omitted.
About half is used for jewelry because gold is shiny pebbles. About 10% is used for electronics. Mining Bitcoin consumes 5X as much energy as gold, btw, per unit value extracted. It also requires mining gold to produce the circuit boards used for mining Bitcoin - given the popularity of the ENIG immersion gold plating process for PCB contacts. The secondary issue is that of course each Bitcoin transaction generates 1…
Where did you get the 100g of e-waste figure from btw? Is that, roughly speaking, the e-waste mass of storage/txn * total number of nodes?
Looks like they, in turn used this reference [2].
[1] https://digiconomist.net/bitcoin-energy-consumption/
[2] https://www.cell.com/joule/fulltext/S2542-4351(19)30087-X