No it’s not subjective, that’s an idealist notion. These words have actual meaning beyond discourse. Our economic and social reality is defined by class struggle over real material contradictions. Politically left people actively support the large majority of humanity who make up the oppressed classes trying to liberate themselves. The actions of the political right keep the oppressed down. The right is materially useful only for a tiny majority of brutal oppressors. That’s the world we live in. It applies in every country. Just because the right is stronger in the US, than in practically every other country, doesn’t make half of them suddenly left.