Religious Jews are definately not a threat to Israel rather an asset - a precious asset and those who oppose to the religious Jews is because they are scared of their values,ideals and the fact that stick to them unlike many modern Israeli politicians. Cutting the funds to large families will not deter them from having more children. Jews have always had large families and they managed pretty well all over.So, unless you actively start deporting religious Jews from Israel(and you never know it may happen - the hatred of the Left is reknowned) then eventually the religious Jews will take over. They need to be prepared to take over and fill in the gaps-doctors, lawuers,technicians, accountants, basically every single aspect of the social fabric.
PLO official: Reports about Abbas' resignation from political life very premature (Haaretz)
from the article: The Right / Religious Zionism sets its sights on leading the country