Again, akuperma, as others already said, the “zionists” you speak of are long gone. The people running Israel today are not the same as those 70 years ago.
As for the chareidi parties only looking out for Chareidim, that’s a product of the Israeli system. When a party is small, and doesn’t have a chance at being a major party (major meaning a chance at being given the mandate in an upcoming election), there’s no need for them to look at everyone. People will vote for them based on who they mostly align with, along with their major issue. For example, let’s say the chareidi parties are likely to align with Likud, but they also stand for chareidi interests. Chareidim who feel strongly on these issues, and would rather see Likud in power instead of a leftist government would vote for the chareidi parties. This would help Likud get the mandate, and also shows that a large group feels strongly about chareidi needs. Only when a party gets much larger do they need to worry about the larger issues.