So, if you look at that factory clamp, to the right of it, you can use it as a guide to cut the 1/4" or slightly more off the hose. There is a little "nub" on the radiator visible in your picture. This is the "stop" where it goes to during assembly.
Mine was in direct contact with the pipe when it was delivered. If I were a betting man, I'd say that the general hose design needs some re-work.
Could the radiator have a 90 degree output that would allow for use of a straighter hose? Not sure. I'm not an engineer, nor did I play one on television.
I placed some adhesive reflective tape on the hose to get her home. so far, it has worked. No matter what fix they do, I will be figuring out some sort of way to insulate that hose from the header pipe. Pipe wrap on the header? Wrap the hose? Drive around with coolant and a spare hose for the rest of my life? I don't know.🤷♂️