Kodi is essentially a media player; it's not a general purpose TV UI like Plasma Bigscreen. Yes, there are a couple of distros out there like OSMC designed to use Kodi for everything, but in my experience they are way too limited. And you really do want a Web browser for streaming, because you are unlikely to find dedicated Linux apps for whatever streaming platform you intend to use. You could presumably run Waydroid and use Android apps, but using the Bigscreen virtual keyboard or a remote with a keyboard on the back is much easier.