Turns out there was a comment necessary 😂

Banks and many investors consider gold to be the ultimate safe-haven hedge against inflation (= increasing of the money supply devaluating the money itself in purchasing power).

Sudden increases in gold purchases by banks is an indicator that now they (finally) see something comming too, OR they want to be ahead of an event that could cause mass loss of purchasing power for everyone holding fiat (the poor plebs) and they want to protect themselves from that (ofcourse without warning anyone, so gold can stay relatively cheap during the time of accumulation) so the coming inflationary event won't hurt their business too much (& fuck eveyone else's savings)