Voting for someone that does not represent you because you are more scared of the other guy is indistinguishable, as a signal, from someone that fully supports them. By voting against your own interests you are actively undermining the democratic process.

Democracy has forever been synonymous with class based societies. It has split entire countries into two barely-distinctive political parties (conservative and “progressive”) that are nevertheless permanently at each other’s throats. Even in its most libertarian-friendly forms, it has constantly failed to avert hierarchy, coercion and the authoritarian machinations of majority-groups.