The simmering war for Bitcoin’s (CRYPTO: BTC) soul erupts anew, this time over the contentious issue of exchange-traded funds (ETFs). Max Keiser, a prominent Bitcoin maximalist and advisor to El Salvador’s President Nayib Bukele, fired the first salvo, casting doubt on the legitimacy of these financial instruments. “Buying BTC ETFs doesn’t own you any Bitcoin,” Keiser said on X, painting ETFs as mere “index products” divorced from the real asset. He ominously added, “U.S. government plans to seize all BTC ETFs in the interest of national security,” alluding to the age-old “not your keys, not y…