It’s genuinely not. App Store review is fully automated and chock full of holes. Anyone telling you there is less malware per capita on the App Store than the Play Store is either a decade behind on their talking points or lying to you. I use Apple for mobile and tablet needs because they offer good hardware with a seamless platform experience, not because installing random garbage on their storefronts is safer – it’s not.

EDIT: I should add the only storefront I have complete faith in is F-Droid.