First past the post is bad for the country... unless one of the two main parties is liberal

Since neither one of the two mainstream fptp parties is liberal (or libertarian) then we can deduce that fptp is detrimental to the country. If one of the two main parties is respectful of individual rights then fptp is not a threat to the country but since that is not the case then we can say fptp is objectively bad and unpatriotic. If we accept 'unpatriotic' to mean bad for the country overall then fptp is unpatriotic unless one of the two main parties is liberal. Since neither one of the main parties is liberal then fptp (and supporters of fptp) is (are) unpatriotic.