Substantive or Symbolic ESG Accountability? Reassessing the CSRD, ESRS, EU Taxonomy and CSDDD after the 2026 Omnibus Reform

To shift EU sustainability reporting from voluntary reporting towards legally binding accountability, The Corporate Sustainability Reporting Directive, EU Sustainability Reporting standards and EU Taxonomy have been developed. The 2026 Omnibus reform pulls back partly this development by limiting which entities must report, setting bounds on value-chain data requests, easing reporting standards and reformulating corporate due diligence. This article discusses whether the post-Omnibus framework enhances substantive ESG accountability or widens scope for symbolic compliance. Relying on a qualitative legal doctrinal and conceptual approach it examines relevant EU legal instruments, regulations, supervisory advice and legal literature. It coins regulation-induced decoupling, a divergence between formal compliance and substantive accountability, arising from the design of a regulation not by firm conduct and frames it through five testable proposals: on market level data loss and on firm level compliant omissions. While simplification can be a welcome thing if it avoids double reporting, it dilutes accountability when narrower scope of reporting, lesser value-chain data and less strict materiality judgements provide firms with opportunities to omit challenging impacts while satisfying technical reporting rules.