You can have righto subs on it, nobody is going to stop you or ban you. For example in the past they removed moderators of f/communism for excluding users pushing the libertarian flavors of it

Here's TOS

    Content Policy

    Content is prohibited if it is bigotry i.e.

    Promotes white supremacy, queerphobia, transphobia, misogyny, classism, ableism, body shaming, antisemitism, Islamophobia, colonialism, speciesism or age discrimination.

    Sexualizes minors or promotes adults having sex with minors.

    Trivializes or makes light of rape.

    Apologizes for police or military brutality, imperialism, eugenics, genocide.

    Apologizes for violence towards children.

    Is a pornographic image/video (however, nudity is permitted if it's non-pornographic).

    Is wilful copyright infringement (however fair use is acceptable).

    Is a "dox" i.e. personally revealing information about a person or persons including but not limited to name, identification number, address, phone number, photograph.

    Advocates for arson, bombing and/or killing people.

    Is instructions on how to design and/or produce explosives.