Highlights

• Investment analyst Amanda van Dyke argues that China's rare earth export controls no longer intimidate Japan or the West, citing diversification since 2010, yet this confidence may be premature.
• Japan has reduced exposure to rare earths through substitution and recycling.
• China retains critical leverage in heavy rare earths processing, refining, and magnet manufacturing, where alternatives remain years away.
• Van Dyke's thesis confuses trajectory with arrival—China's rare earth weapon is no longer decisive but remains disruptive.
• Leverage only fades when substitutes are operating, not just promised.

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An investment analyst’s recent thesis (opens in a new tab) is compelling—here’s where it holds, and where it overreaches. In the widely shared Substack essay, Amanda van Dyke—a seasoned mining investor analyst, founder of the Critical Minerals Hub, and board advisor across commodity-focused funds—argues that China’s renewed use of rare earth export controls no longer intimidates Japan or the West. The claim is confident, elegantly argued, and grounded in history. It also warrants a closer look. Remember, for investors, confidence is not evidence.

Van Dyke’s credentials matter. With experience spanning junior mining, capital markets, and policy advocacy, she is no armchair analyst. Her thesis draws a straight line from China’s 2010 rare earth squeeze on Japan to Tokyo’s subsequent diversification—and concludes that Beijing’s favorite lever now delivers diminishing returns. There is real substance here. But there is also narrative compression that markets should unpack.

What She Gets Right—And Why It Matters

Van Dyke is right about how coercion works today. China rarely announces blunt embargoes. Instead, it tightens supply via licensing delays, regulatory ambiguity, and expansive “dual-use” definitions that quietly constrict flows. This is modern tradecraft, not theater.

She is also right that Japan learned the 2010 lesson. Tokyo invested in substitution, recycling, selective stockpiling, and niche processing. The strategy emphasized control and resilience over scale—and that has meaningfully reduced exposure compared with a decade ago. Historically, China’s 2010 move did backfire by accelerating diversification rather than securing capitulation.

Where Confidence Outruns Reality

The assertion that rare earth leverage “no longer scares Japan, or the West” is directionally optimistic but strategically premature. Japan is less exposed—but not immune. Its processing footprint is advanced yet narrow. Heavy rare earth separation, high-performance magnet manufacturing, and scalable non-Chinese alternatives remain globally constrained despite recent Lynas Rare Earth shipments via Sumitomo.

The essay leans heavily on future optionality—deep-sea mining near Minamitorishima, allied supply chains, and Western industrial policy momentum. These are real and important. They are not, however, commercial buffers today, and as we have attempted to educate at _Rare Earth Exchanges_™, not sufficiently comprehensive nor enduring. Markets price what operates, not what is announced, or what’s in the works years from today.

China’s leverage may be weakening over time—but it persists precisely where it matters most: heavy rare earths sourcing, refining, and magnets, not bulk oxides. And alternatives, while promising, are years away as we have chronicled.

The Rare Earth Exchanges Takeaway

Van Dyke’s thesis (opens in a new tab) is directionally credible but chronologically aggressive. China’s rare earth “weapon” is no longer completely decisive—but it remains disruptive to say the least. Japan is better prepared than in 2010. The West is more serious than ever. Declaring victory now, however, confuses trajectory with arrival. It also serves to bolster overconfidence, which, when turning to hubris, becomes dangerous.

In critical minerals, leverage fades only when substitutes are operating—not when they are promised.

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