I think NLnet Labs is indeed like 50% funded through German Sovereign Tech Fund, but most of NLnet + the rest of NLnet Labs is funded via EU project funds or other public programs. I don't think NLnet receives anything at all from the Dutch government AFAIK, and NLnet Labs gets tiny amount of funds via Dutch SIDN subsidy I guess, but that's pretty much it.

This is all (tried to) rememberings from meetings in 2024 sometime, so could be different today.