Well you can see 10 icons on my home screen. I actually have 17 icons, 7 icons are just hidden and can be accessed by a simple swipe up on the Google Photos icon for example.
This is the type of functionality that simply doesn't exist with iphones.
It's not what you see is how it looks, how everything is arranged.
Also I'm using Nova Launcher which enables me to use a bunch of different gestures like Swipe Up, Down, Double Tap,Double Tap Swipe Up/Down, Swipe up/down(two fingers) so that empty space is actually useful and used for something which is obliviously something you can't even begin to grasp.
It does make a huge difference. The thing is I can choose to place my icons at the top as well if I wanted to but it never occurred to me to actually do it because they are way harder to reach that way. This is why on almost all Android home screen icons are at the bottom, because they are way easier to reach that's why people actuality choose to place them there. Simple logic.
First icons look in a certain way, have a certain size, are all placed at the bottom and lack labels, you can't replicate that. The grid is also different.
Then it's the widget which again can't be replicated on iphones. I don't see what's the problem that is also shows the battery percentage and the time, I'm using it for the weather/date info. Also It's not like I'm limited to that specific widget in any way so complaining about it makes no sense whatsoever.
Then it's the app drawer which hides most of the apps I don't need on my home screen and arranges them in an alphabetical order, then it's Nova Prime's function of hiding a folder behind an single app icon(one tap opens the app one swipe opens the folder).
Was this enlightening enough for you?