To be fair it's probably the most secure environment for the average Joe, you're just saying that it's not perfectly secure, which would be impossible in this world.
You could do far better than iOS. Worse though is that it encourages very poor infosec because when it's profitable for Apple and often makes doing things correctly difficult or impossible.
It makes checking the hygiene of apps you use impossible, building them from source artificially difficult and expensive and pushes users towards services with serious flaws like icloud backup.
