I mean, you are though, inherently.
I don’t think this is the main reason people have switched to Apple though. I think the main reason is that Apple and GrapheneOS are currently the only two mobile vendors (IMO) that are developing high-security features and enabling them by default for their users.
Take Google for example, who typically have cutting-edge advancements developed by their security researchers, which GrapheneOS takes heavy advantage of, but even the Google Pixel line often doesn’t. It’s because Google as an overall company does not give a shit about security or privacy, they just have some internal groups that do. It’s not making it to product a lot of the time. When Apple’s security team launches something it gets widespread usage, because security and privacy have some level of buy-in at the product level you simply do not see with other commercially available products.
A lot of people in this community also trust GrapheneOS when it comes to topics of mobile security, and they are on the record many times saying that iOS is the second place option behind GrapheneOS.
Obviously the best choice is usually to just stick with our Android recommendations and there are many reasons to generally recommend against iOS, but in a comparison to mainstream Android it is no real contest that Android is just trash.