Just do you know, as stated in the article, this policy is targeted at the Muslims who have invaded Germany. Like blacks in the USA, they flock to gubmint jobs and are rapidly taking over the machinery of government at all levels.
This move excludes most of the Muslims who refuse to sign the policy.
Actual German nationalist have very little problem with Israel.
I wouldn't expect actual German nationalists of any flavor to be a factor. My initial comment alludes to "official" Germany committing suicide.