Totally agree. I think some folks are a tad OCD on the fuel saving issue, as if nothing else matters. If you drive 8-10K per year, will switch vehicles every 3-5 years, do mostly highway driving, it may not matter that the Odyssey sucks more gas, especially if you consider the the ridiculous mark-ups (which wipes out any potential fuel savings anyways) and unreal wait-times for the Sienna. I am not crazy about the Odyssey because it is woefully outdated in the tech and driving aids/safety features, no justification to spend $55K plus taxes on an outdated car in 2022.
I am still considering the Sienna but maybe in a couple of years when they put TSS 3.0 and the new modern infortainment display on it, the wait times is more realistic and no pressure to pay mark-ups out of desperation, meanwhile, I ordered a 2023 Palisade Calligraphy with the plan to trade it in a couple of years..