I spent a bit of time customising the interface because it's a fairly important aspect for me. That's one thing I've always liked about Windows. Versions to date have always allowed the user to change the appearance and usage (the interface) in so many different ways.
Windows 10 is no different. It's possible to use it as it comes or change the interface ..and for those who don't like the W.10 interface at all, the system allows the installation different 3rd party programs that can make it look and feel like Windows 7 ..or even change it to something different altogether.
I personally like the tiled interface and adapted to it quite easily from the beginning. However, I have preferences as to how the tiles are set up and have customised them accordingly. Ease of use? ...well, everything I need is very quickly accessible.
I like to play a few games on my computer and have optionally pinned shortcuts for them to the tiled Start Menu. The same has been done with shortcuts to image editing programs, office applications, audio programs, system and other utilities.
Some screenshots:
This is the Desktop appearance, a few files and shortcuts for things I'm currently doing. The background is just a pattern made with one of my art programs.
This is the Desktop with the tiles open.
A closer view of the tile arrangement
The Creators Update version of Windows 10 is includes a couple of icons at the top-left of the tiled Start Menu. These will toggle the tiles on/off and toggle the alphabetical menu on/off. Programs can be scrolled on the alphabetical menu...
..but to avoid scrolling, click on any letter of the alphabet and this shows..
If you know the first letter of the program you want to open, click the appropriate alphabet letter. Programs starting with that letter will jump to the top of the Window.
Finally, right-clicking on the Windows icon (on the Taskbar) will open the 'Power User Menu', giving a quick way to get to various parts of the computer.
OK, while other arrangements can be thought easier, I reckon Windows 10 crams a whole lot into a space that has been made as easy to use as possible. A lot of it doesn't need daily access but anything that does can have a shortcut pinned as a tile to the Start Menu. Seems easy to me but opinions might vary.