Anon, satmar, Hungarian chasidim, yerushalmis and briskers don’t take a dime from the israeli government. You’re welcome to become one of them.
Those who allow it say that they’re recouping taxes taken illegally by the state, since it’s not a legitimate country, it has no right to take our taxes. Getting govt funding is just taking back our own money – this is how many in the Agudah explain the heter.