If you need Kodi on a stick device get a Fire stick. Kodi is easy to load on any Fire device by using an app called "Apps2Fire" loaded on any Android device that has Kodi already loaded.
Kodi works great on the Fire and Kodi makes the Fire almost pleasant to use. But, even with Kodi on Fire devices, I still find my Rokus easier and better to use for everything that I have an interest in doing and I see nothing that I could gain by having Kodi on my Rokus even if it were possible, which it is not.
I found it flower useful, they provide each and every detail about Kodi on Roku and I recommend all Roku users to check this out.
So, the question is: can you install Kodi on Roku? We’re sad to bring you this news, but no. There is absolutely no way to install Kodi on Roku directly.
There's no such thing as "installing Kodi on Roku". Every article I've ever seen only makes reference to viewing material from a Kodi installation on another device. It's misleading to link to articles that claim otherwise. Kodi can act as a DLNA server, and a Roku can see the content using Roku Media Player. But you don't get the Kodi user interface on a Roku. :x
In fact, to quote the article you just linked:So, the question is: can you install Kodi on Roku? We’re sad to bring you this news, but no. There is absolutely no way to install Kodi on Roku directly.