From what I learned from KSP, a high latitude launch site is helpful for polar orbit. That's why Vandenberg is used for this purpose over Cape Canaveral (or other equatorial launch sites) in the US.

It will be interesting to see how this shakes out because there are other nations participating in ESA that have both land and launch sites that are at higher latitudes than Germany's floating launch site (e.g., [1]).

[1]: https://www.euronews.com/next/2023/01/13/this-arctic-space-c...