The May 2026 arXiv preprint (v1, not yet peer-reviewed) from Yariv et al. presents the first attempt to stack eight SPIRou eclipse ingress/egress sequences of the ultra-hot Jupiter WASP-33b to extract spatially resolved dayside information at high spectral resolution. Using the ATMOSPHERIX pipeline combined with the starry framework, the team reports a tentative CO detection from in-eclipse data alone and a marginal tightening of the planetary rotation constraint when merged with existing phase-curve coverage. Methodology relies on coherent stacking of short time-series spectra across eight separate events, with injection-recovery tests projecting that 15 additional eclipses would be required for a secure rotation measurement under synchronous-rotation assumptions. This approach extends lower-resolution eclipse-mapping successes from HST and JWST (e.g., the 2023 Nature Astronomy paper by Coulombe et al. on WASP-18b thermal mapping and the 2022 AJ study by Mansfield et al. on phase-resolved emission) into the Doppler domain, yet the original coverage underplays processing challenges for slowly accelerating planets and the risk of residual telluric or stellar-line contamination in short-baseline SPIRou data. Synthesizing these sources reveals a broader pattern: ground-based HRS can now deliver wind and temperature maps of hot Jupiters without waiting for next-generation facilities, but only if systematic errors in rapid-cadence observations are solved. Limitations include the small sample of eight eclipses, tentative rather than definitive signals, and reliance on injection tests rather than real detections of spatial structure. The work positions existing 4-m-class telescopes as viable weather imagers for the nearest ultra-hot Jupiters, shifting focus from discovery to routine 3D atmospheric tomography.