Afaik, there are however competing views of how to create a more backed low interest system on par with Northern European interest rates like the Blue Bond proposal ( see Bruegel or see this link).

The difference between the two rates does kind of illustrate why there are German objections to Eurobonds.

How so, could you elaborate how you see euro bonds working?
Imo, the inverse is equally true. Ergo, an avarage lower interest rate could benefit more countries and people But it’s only true when there is a solid EU fiscal/monetary policy in place. If not, then your rationale holds, I’d think.