THDE Model with Varying G and C<1 Reduces Dataset Tensions from 7.4σ to 5.3σ in Pantheon+ MCMC Fits

The arXiv:2608.23592 preprint models a flat FRW universe with THDE density scaling as ρ_DE ∝ L^(2γ−4) where L is the future event horizon and G evolves as dlnG/dln a = α_G. MCMC chains with Pantheon+, Hubble parameter and BAO datasets produce posterior peaks at C<1 and non-zero α_G that improve statistical metrics relative to ΛCDM while partially reconciling probe inconsistencies. The authors quantify internal tension via Index of Inconsistency and Q_DMAP, showing reduction from ~7.4σ to ~5.3σ under the best-fit THDE parameters. This result connects to earlier varying-G holographic models and to the Hubble tension literature, where changes in effective G at late times can mimic evolving dark energy without new fields. Future DESI and Euclid BAO releases will test whether the same parameter region continues to suppress tensions below 3σ within two years.