Life is much easier after ensuring parents are only using iPhones and iPads and not laptops. It’s not hard to imagine them clicking through whatever they need to do to install malware.
I've had my parents using Android and Windows for years and never once did they install malware. A couple of viruses on Windows accumulated after many years sure but none on Android. I'm not sure where people are getting this logic about this.
It's all part of the continued infantilization of our society. Well-meaning people want to protect everyone from every possible bump on the head, so they wrap the entire playground in bubble wrap (see relevant Simpsons episode).
The level of paternalism is also a positive feedback loop. The more paternalistic we are, the more we need to become because people rely on the guardrails and never learn about the danger. Then at some point they climb the guardrails, assuming that if it was dangerous to climb the guardrails then they would be bigger and less penetrable, more signs and padlocks, etc. So then we make the guardrails bigger. Rinse and repeat ad finitum.