The Overton Window is relative, sure, but that’s only useful in defined constraints, and only for one point in time. Leftism is socialist, rightism is Capitalist.
Bernie is a Social Democrat as well.
…and Sanders himself defines Democratic Socialism as the completion of the New Deal reforms, not a gradual transition to a socialist economic system. There’s a difference between the Overton Window shifting and a gradual change in definition over generations, but if you want definitions to remain entirely static, then we’re both using left-wing incorrectly, as it’s, “real,” definition is opposing monarchy’s veto power over parliament.
Yes, he calls himself a Democratic Socialist while being a Social Democrat, I’m aware.
Left wing in the modern context refers to anti-Capitalism.
Left-wing has always had a loose, relative meaning, and arguing otherwise isn’t attempting to stop the Overton Window from shifting. It’s just an attempt to gatekeep who gets to be a, “real,” leftist.
