Does this patch iOS vulnerabilities exploited by NGO’s Pegasus spyware?

Does the latest iOS update patch the main vulnerability in iOS exploited by NGO Group’s Pegasus spyware? How vulnerable do iPhone users remain? How well aware is Apple of all of the vulnerabilities exploited by these spyware companies? What’s the prognosis looking forward for how secure iOS devices will be given how seriously they’ve been compromised for several years now? How can customers know when and if their devices can be trusted again?