Earlier quoted context omitted.
My experience with tech illiterate people is that they think they can't get viruses on Mac or iOS. Viruses are a Windows-only thing in their minds.
You can't get viruses on iOS unless you're jailbroken - Apple's walled garden pretty much guarantees that. Even jailbreaking is insanely difficult with the newest versions of iOS. There is no public jailbreak of the current version of iOS, or the version before that.
No. Apple can't guarantee their software is secure, so their walled garden doesn't guarantee anything like what you say.