I'm not sure I understand what your complain is here... Do you mean the Flipboard-powered My Magazine thing? Yeah, that's part of the customization Samsung baked into the Note 3, and yes, you can disable it (if not uninstall it) from the Application Manager.
If you mean the Flipboard app, you can just uninstall it.
Android IS open to customization. That's what Samsung did. It customized its version of Android and baked it into the Note 3. On top of that, you seem to have a carrier-branded phone, which means the carrier further tinkers with the software to add/remove their own set of apps and features (bloatware). Pure Android is something different, and something this particular phone DOESN'T have. You can root your device and flash a different ROM should you want to get rid of Samsung stuff, but that comes with the inherent risk of tinkering with your device.
Personally, I don't like the My Magazine implementation but I do enjoy Flipboard's own app.