“There wasn’t a single voice that said we were on the wrong track here,” Neuendorf said.
A virtual congress of the ruling body FIFA on Wednesday will in one vote decide on the 2030 and 2034 hosts, with only one bid for each event, and an overwhelming majority expected from the 211 FIFA members.
The bid for 2030 is a joint one from Morocco, Spain and Portugal, with the first three matches planned in Uruguay, Argentina and Paraguay to celebrate a century since the first World Cup 1930 in Uruguay.
The Saudi bid for 2034 is also unopposed.
Rights groups oppose Saudi Arabia getting the tournament because of its human rights record, and the Fairness United group had called on the DFB to vote against the proposal.
But Neuendorf said that such a vote or even a boycott would not lead to what they want to achieve.
“I believe we can only exert influence if we say: Yes, we agree, but we know there are deficits,” he said.
“We are all aware of the civil rights situation and the reprisals in Saudi Arabia. This is not something we approve of in any way.”