First off. I consider Samsung's Touchwiz to be a non geeky UI, if that helps in clarifying my point.
Also the default interface of Android is geeky because of the following reasons:
- The use of the colors, i mean why everything is black or blue. Why not use some lighter colors. The samsung galaxy nexus feels like a phone out of a Tron movie or something. It was bearable till Gingerbread 2.3 but with 4.0 they have really made it even horrible.
- The transitions - they have worked on these 4.0 but they are still inconsistent throughout the OS.
- There are no standard icons for things like back, forward, refresh, add, delete throughout the OS. Android should have standard icons and should also ask developers to use standard icons when developing their apps so that using the phone feels like a unified experience.
- There are no subtle hints throughout the OS helping you to navigate.
- Have you looked at the text buttons used throughout the OS, they are so ugly!
- Terrible browser. This is from a company that makes the best browser on the desktop. Even the browser on the fledgling Windows Phone platform is 10 times better than the Android browser.
- Too many progress bars and tap to hold operations.
- No desktop sync software like iTunes or Zune. I have seen several people complaining about this.
Not to mention the naming scheme, the OS itself is called Android (which is geeky). The font used in Android 4.0 is called Robotto (really??)
However, i do think that Android really nailed the notification system. That is one of best feature of Android UI.
This is just a small list but I hope it makes my point clear. And i think that the biggest reason Android tablets didnt take off as well as expected because regular people just couldn't connect with the UI of Honeycomb.