This study aims to critically evaluate the theoretical framework, methodological robustness, and empirical claims of Tran et al. (2026) regarding the impact of Fintech credit on green innovation. Employing a systematic critical review methodology, this research analyzes the original study's data sources, variable operationalization, and econometric modeling to assess both validity and reliability. The analysis reveals that while the original study successfully differentiates peer-to-peer (P2P) from balance sheet lending and identifies key moderating variables (capital supply and financial development), its main findings are compromised by three specific limitations. First, the observational cross-country design establishes correlation but fails to prove definitive causality. Second, relying exclusively on patent counts creates measurement ambiguity regarding true green innovation. Third, hand-collected Fintech credit components introduce potential coding inaccuracies. Furthermore, theoretical gaps concerning reverse causality and mechanism ambiguity remain unresolved
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