Agree never going to see Honda and GM work together. Thats a bit like Ferrari using a Mercedes PU in the back. NEVER going to happen.
Maybe Honda should have done more to work with Red Bull. Who I presume are going to still be using their PU in 2026 just with Ford doing a bit of work on the electrical system. Whether Honda or Ford will be better at that only time will tell, but id imagine the Japanese have some very knowledgable people in that neck of the woods.
It could have been that Honda still wanted to make a engine aswell as the hybrid system, which is why it hasnt worked out with the Red Bull plans after RB announced they are making their own PU.
I cant see why Honda wouldnt have wanted to partnership with the best team on the grid over the last 3-4 years. It doesnt make sense not to want your name on the car at the front winning WDC and WCC trophies. its likely Honda doesnt want to just build electrical part but wants its hands on a PU aswell.
My opinion anyway.