The spyware mentioned in the article is from Paragon. CitizenLab has an excellent analysis of it after it was used in Italy:
So are phones safe today? Unknown. The exact CVEs exploited in this attack have been patched but the point of zero-days is they aren’t known.
If you are concerned about this kind of attack, the only known effective mitigations are to use Lockdown Mode on iOS or GrapheneOS on a pixel. These two approaches have no documented effective attacks against them from zero-click spyware like Paragons Graphite.
Other steps to take are to disable auto download of attachments/images in all Messaging apps and in your email app and download iVerify to provide a means of detecting (but not preventing) attacks.