>since the Israeli intelligence company was supposedly "closely monitoring how their customers were using the software"
If the Israelis were going to veto a country's use of the software, it's reasonable to assume that the country was intelligent enough not to tell them what they were doing with it.
The important thing to realize is that NSO doesn’t just hand over their attack tools completely. If they did, they would just get copied and they wouldn’t be able to charge for them.
NSO maintains control and is semi-actively involved in the exploitation (NSO servers are used and they control this access). This is very different from selling someone a knife that is later used in a murder.
There is a very good Darknet Diaries breakdown of what the NSO group can and cannot do - https://darknetdiaries.com/episode/100/ - and despite their claims otherwise, the evidence strongly points to them being complicit in attacks rather than just being a vendor.
If the Israelis were going to veto a country's use of the software, it's reasonable to assume that the country was intelligent enough not to tell them what they were doing with it.