First past the post is a form of taxation

If the people are bad and the purpose of the government is to protect the people from themselves then democracy is inconsistent. If the people as a whole are good (as we must assume) then it makes sense for the government to be as democratic as possible unless it seeks to oppress the people and do harm.

Since it is the non-government part of the economy which is economically productive then the state derives all of its wealth from the people. If the people are distinct from the state it is not the state which creates wealth but the people and so a lack of democracy is a subsidy for the state since the state gets its wealth from the people. Non-democracy unites the state and the people more than would be the case in a more democratic system and so then we can think of it as a tax since with democracy the productive people would likely disengage themselves from the state.

To unite the state and the people is a form of taxation because it is the people who are economically productive and not the state which means first-past-the-post is a form of taxation.