Question

There is a well-known Haredi rabbi who claims that the state is not allowed to discriminate between one blood and another, and therefore it is obligated to draft the Haredim as well.
For their part, some of the Haredim will not enlist, and he does not think it is appropriate to deal with them the way any ordinary draft-dodger is treated. Rather, he says their citizenship should be revoked, since this is a collective-ideological matter; personal punishment is not effective and also not really so just.
Precisely removing from citizenship someone who chooses to belong to this public draft-dodging is, in his view, more just.
 
Is that possible?
Is he morally right?
(He says they should be given residency instead of citizenship. Of course, most benefits given to a citizen are only for a citizen and not for a resident, and they cannot be citizens since they do not accept obligations and only want the rights.)