Does Heidegger has had an added value on the world? He is very known which does not say anything about if he is a bullshit artist or a real truth seeker. Could

Does Heidegger has had an added value on the world? He is very known which does not say anything about if he is a bullshit artist or a real truth seeker. Could anybody explain one of it's new ideas? Did he just improved existing ideas? I believe he is a bullshit artist but I would love to be refuted.