According to @fundstrat, Bitcoin ETFs have had a significant and direct impact on BTC price action due to actual spot purchases backed by ETF inflows. On-chain data from platforms like Glassnode confirm that ETF issuers are acquiring real BTC to match inflows, directly reducing circulating supply and supporting bullish momentum. Traders should note that skepticism about ETF impact is unfounded, and continued net inflows into spot Bitcoin ETFs could further tighten supply and drive volatility. This underscores the importance of monitoring ETF flow data for actionable trading signals in the crypto market (source: @fundstrat, Glassnode).