WDYM legitimising them is a choice?
In the minds of idiots, of which we have many, forming a political party means they have serious well constructed ideas. You might like weetbix and vote labor, I might like fruit loops and vote NSN.
It also gives them a platform. Journalists will consult them for comment because they drive engagement. Before you know it someone will have a regular spot on a Sky News panel.
Legitimising them may technically be a choice, but I have no faith that we as a society would make the correct choice.