Probably the same as anyone working for Chinese, American, Russian, French, Iranian or Egyptian intelligence services.

Many people are patriots and defend their country's interests.

Which country was NSO defending when they helped Saudi Arabia murder Khashoggi?

As far as I can tell NSO were mercenaries, not patriots.

Saudi Arabia is an Israeli ally. I'm not condoning anything, just pointing out obvious things. NSO Group was founded by Mossad personnel, so it's not surprising that they would sell stuff to their allies.

I'm a bit skeptical of the idea that it was patriotism for Israel that motivated these people to participate in the murder of a journalist critical of Saudi Arabia, even if Saudi Arabia is an ally of Israel.

I'm pretty sure these people are mercs without morals.

Even most mercenaries have some code of ethics. And murdering journalists is not in it as acceptable behavior. This is sociopathic thug behavior you'd expect from mafia hitmen.