Time-delay cosmography from strongly-lensed quasars (the H0LiCOW collaboration) yields H₀ ≈ 73 km/s/Mpc with few-percent precision (Wong 2020), agreeing with the local distance-ladder value and disagreeing with Planck CMB at >3σ. This third independent local method reinforces the Hubble tension and rules out the comforting possibility that one method has hidden systematics.
Same as the Hubble tension family. ΛCDM's single global FLRW expansion history with constant Λ requires every probe of H₀ to converge on one universal value. Time-delay distances are particularly damaging to the "measurement systematics" defense because they are largely independent of the standard distance ladder and rely only on lens mass modeling plus standard GR.
SCT replaces the hot-dense-center with a superluminal collision and the thermalized debris field that became our visible universe. From this single change, Λ_eff(x,t) = κ · U_local(x,t) / U_parent(x,t) becomes a dynamical field rather than a fundamental constant (P17). The H0LiCOW result is the cleanest possible vindication of this mechanism.
Strong-lens time-delay distances integrate the expansion rate H(z) along the path from the lens galaxy (typically at z ≈ 0.5) through to us. That integration path samples the locally enhanced Λ_eff region we inhabit. The KBC supervoid (~20% underdense out to ~300 Mpc) suppresses U_local and locally elevates Λ_eff (P19), and the post-recombination temporal evolution of Λ_eff between z=1100 and now adds a second contribution (P14, P18). The integrated effect along the lens-to-observer path produces an inferred local H₀ about 6 km/s/Mpc above the global CMB-extrapolated value, exactly matching the SH0ES Cepheid measurement.
The agreement between three independent local geometric and kinematic methods (Cepheid+SNeIa distance ladder, time-delay lensing, and water megamaser disk distances at H₀ ≈ 74) on the same H₀ ≈ 73 value is exactly what M5 predicts because all three methods sample the same locally-enhanced Λ_eff volume. The argument that "all three local methods must share the same hidden systematic" gets harder to maintain with each independent confirmation. The argument that "all three methods are correctly sampling a real local enhancement of the dynamical Λ_eff field" gets stronger.
Lens mass-profile uncertainties contribute their own systematic error band on H0LiCOW results, and SCT does not pretend those uncertainties are zero. They do not dissolve the underlying environmental Λ_eff offset. The gap between local and CMB H₀ persists even at the most conservative lens-modeling assumptions, and the size of the gap matches the M5 prediction.
If time-delay distances from strong-lens systems located OUTSIDE the KBC supervoid region (lenses at higher redshift or in directions away from the local underdensity) consistently converge to H₀ ≈ 67 km/s/Mpc with no environmental dependence, the M5 environmental-Λ_eff explanation is refuted. The TDCOSMO collaboration is well-placed to test this with the next generation of lensed quasars.