The issue here is that while baseline apple is more secure than baseline android, a user with knowledge or a guide can improve the android security by a lot, whereas the apple baseline is also the ceiling. There's stuff you can do with iPhones but if you don't trust apple, you are kind of fucked.
Android people that mention security won't be using a stock phone from the store, they will have disabled stuff, enables alternative stuff, or even installed a completely new android based OS, and this can't be done with iPhone or iOS.