You pair would do well to place the blame where it belongs...on your government and your corporations, just like every other time.
Agree that some portion is inane U.S. regulations like the Big Three funded 25% import tariff on completed pickup trucks. Hence the Japanese trucks are (were?) imported in kit form and "assembled" in the U.S. Toyota finally gave up on making Tacomas in California when CA tightened the regulations on VOC emissions. I think now many of the Toyota Tacoma trucks are actually built in Mexico.
Not just Honda... Toyota sells passenger vehicles with diesel engines in almost all countries of the world... Except the U.S. ... Trying getting a diesel HiLux (Tacoma) in the U.S. Scads of them right across the border in Mexico. Zero for sale in the U.S.
They have several diesel motors in the HiLux. The Tacoma doesn’t have any diesel offerings.
If the HiLux is not the non-US version of the Tacoma, it is PDC... The one visual difference I can see is the HiLux might have a little more ground clearance. Possibly shallower or flat floor pans in the passenger compartment? Regardless, I would be in line to buy a diesel HiLux if it were offered in the U.S. market.
I think the "tell" for Toyota is their work with the fuel cell trucks at the Port of LA. If they can sort out fuel cells in Class 7 / Class 8 hostler trucks, downsizing the technology for Hino / Tundra / Tacoma trucks would make it easy to totally bypass the current diesel emission regs...