1. Starbucks has experienced stagnating comparable sales and margin contraction in recent years, significantly underperforming industry benchmarks; 2. The 'Back to Starbucks' strategy emphasizes menu simplification, reduced discounts, and compact store formats to enhance operational efficiency and profitability; 3. Despite strategic adjustments, near-term growth prospects remain uncertain, and the stock's valuation fails to reflect persistent operational challenges and competitive pressures.