The four major altcoin ETFs have all landed on Wall Street, but the reality is far less lively than the narrative: the cumulative net inflow is only $700 million, some products have zero subscriptions for several consecutive days, and the coin prices have fallen synchronously. The sharp contrast between the rapid approval speed and the cold inflow of funds reveals a core fact - it is much more difficult than imagined for altcoins to replicate the gold miracle of BTC and ETH spot ETFs. At present, there are four types of spot ETFs listed in the United States, namely Solana, XRP, LTC, and HBAR, but their performance shows that they are easy to issue but difficult to attract funds. Solana's five ETFs have only raised a total of 420 million US dollars, of which 80% came from Bitwise's centralized subscription on the first day, and subsequent inflows have significantly slowed down; XRP relied on large initial subscriptions to support a total of 270 million US dollars, but continued to weaken thereafter; LTC only attracted $7.26 million, while HBAR attracted approximately $74.7 million, with most products having daily inflows of less than one million or even zero. At the same time, since the launch of ETFs, the prices of these four types of tokens have generally fallen by 7% to 31%, and the sensitivity of market sentiment to "ETF news" is decreasing. This is not a liquidity issue, but a structural constraint. The overall market value of altcoins accounts for less than 20%, and the underlying assets have weak liquidity, strong volatility, short narrative, and unstable fundamentals, making it difficult to attract mainstream institutions to bear additional beta risks in the context of bear markets. The net value of ETFs is highly dependent on spot prices, and once the underlying token is emotionally impacted, the ETF itself loses its appeal. From a regulatory perspective, the US SEC is accelerating the clearance of the cryptocurrency ETF pathway, but the enthusiasm of institutions to participate still depends on whether the pledge can enter the ETF in compliance. Recently, the Ministry of Finance has issued a positive signal that once pledged ETFs are released, SOL, AVAX, and ATOM may face real institutional demand, rather than the current speculative funds. The listing of altcoin ETFs marks a new stage in the instrumentalization of cryptocurrency investment, but in the short term it is still difficult for them to assume the role of a "capital gateway". The more realistic trend in the market is that the popular direction in the future will shift from single altcoin ETFs to safer products that are "combination based, index based, and multi chain pledged", rather than betting liquidity on a single chain.