I agree with your "sensationalism is bad" take; especially as meaningful, non-incendiary comments now often get quickly downvoted for viewpoint, not tone (IMO downvoting should cost 0.1-0.3 karma). But not with "nothing to see in CB gold holdings fluctuations" view:
R1. But central bank gold holdings are rising organically, and partially at the expense of US treasuries. CB gold holdings have been dropping for 35 years, until about 2015. The price rise of gold from 2005 to 2015 did not reverse this trend. From 2015 to 2019 gold price did not rise, but reported holdings did. The recent doubling of the gold price muddies things a little, but the trend is clear.
R3. Reported gold purchases have trended down in 2025 and 2026, probably due to price doubling. But they are still positive. Emerging markets did not sell into this strength to build up more liquid holdings (UST) as more effective tools to support their economies against future malaise. Even "trending down" part is muddy, too, because some countries CB do not report it. China, an elephant in the room, started better obfuscating its holdings, including gold, since COVID.
R4. Yes. Gold owned by CB strognly trended down since 1980. That trend stopped in 2005 and reversed somewhere between 2005 and 2015. And likely accelerated in the last few years.
As a side note, I personally see USTs losing dominance as a reserve asset as a good thing. USG needs some checks on its spending, and world being willing to buy long dated treasuries at below inflation rates incentivizes the "we do not need to solve real problems, we can just print more money" mindset. My 2c.