Glad you had a fun time with it! 🐳 If you mean the website button that appears at the start of the web version, that button is there in case we publish the game to a game portal that doesn't have a easy access the downloadable version (like Newgrounds) . That way, players that want to find a link to the downloadable version, can easily be redirected to a page where they can get it at.
Here in itch, it's a bit redundant yes. But the button is also prepared so that once we revamp our main studio website, it redirects to a dedicated game page then. Hope that clears it up! 🤗