Re: But..
I think you pointed out the problem already. Users agreed to Facebook's snooping. They didn't agree to NSO's. Facebook didn't agree to NSO's. Nobody agreed to NSO's. NSO's is obtained by breaking into systems including user phones and possibly including Facebook's servers. In addition, NSO's malware spies to a much greater extent than does Facebook's. NSO's can reportedly turn on cameras and microphones to record background information. Facebook isn't believed to do that, though I wouldn't put it past them to do so eventually.
I hate Facebook too. Everything about them. I refuse to use any service they run. At least people expect that Facebook will be spying on them if they do choose to use their services. NSO's is worse.