Many users, myself included, choose iOS because it’s free of viruses and malware - that is the benefit of the review process. If you don’t want that, you can use Android.
And where did you heard iOS is free from viruses?
https://en.wikipedia.org/wiki/Pegasus_(spyware)
From the top of my head there's also AdThief and AceDeceiver.
Not only that but App store is full of Anti-virus offerings.
They don't block, and you can disable scanning fully.
It's not.