I believe he’s referring to kbin as an app that competes with the lemmy app itself. It’s a bit off, but not entirely. The problem is that kbin introduces things that are not entirely lemmy compatible. So it feels like a new app, meaning it feels like a fragmented ecosystem. It’s not entirely wrong, and it does make for a poor user experience when it comes to onboarding, but overall the thats largely the intent of the fediverse: provide options. You should be free to create your own version, however compatible you choose to make it, and add whatever features you want. Users are free to use it or not. No one can disable all functionality such as reddit shutting down all third party apps. This is by design and why you’ll see many great apps pop-up. Kbin being one of those options.