The iPhone isn't a product. The Apple ecosystem is. I purchased it to ensure (A) nobody can take my phone, punch in my passcode and Apple ID and install malware

The iPhone isn't a product. The Apple ecosystem is. I purchased it to ensure (A) nobody can take my phone, punch in my passcode and Apple ID and install malware that hides itself or otherwise flash the software to look like iOS but with malware on top, and (B) when I use native apps, the chance of having malware distributed to me there is almost 0.