On that specific point they are being discriminated in favor of, though. Please show the specific harm, of how not forcing someone to join the military but still allowing them to if they want, is harm, if you disagree.
If you have other examples of them being discriminated against, just use those.
> they cannot be TRUSTED
They are allowed to volunteer if they want. They aren't being prevented from joining. Instead they are only not being forced to, which is discrimination in favor of the people who are not forced to join.
You need to show an actual specific law that harms them, to support your argument. Not forcing people to join the military is a benefit, not a drawback.
There are basically no circumstances, where not forcing someone to join the military, is a drawback.
Rather, like Apartheid South Africa, Arab Israelis are being very, very clearly told that they cannot be TRUSTED in bulk with something like assault rifles in the presense of Jewish citizens.
Apartheid was not merely Jim Crow type laws - it was existential.
I deliberately chose these laws because they get to the heart of what an Apartheid state is.