GAW: I think that would be appropriate. Part of what society does is allocate its resources. If you exclude a part of the community from receiving any govt benefits, it would not be appropriate to still tax them. They should be able to tax themselves and allocate their money.
Agreed. But by working in Israel, you ARE receiving benefits (such as infrastructure, security, electric, water, etc.). I agree with you that someone who is “independently wealthy” and receiving money from external sources (such as US bonds) who “opts out” should be included. They would they have the right to opt out and not get the various benefits (such as medical, voting rights, social security, etc., as well as water infrastructure).
Once again, the difficult part is deciding who is part of that society, but I believe that can be determined by seeing who benefits from the state.