Hey folks! Just realised it - Barry is responsible for the current threat for the Legends. He started Flashpoint and after Eobard helped him to kinda restore the timeline like before, Barry just released him like "let it go, let it go". Aaaaand then Eobard runs back in time, assembles The Legion of Doom and starts to cause troubles for Legends. So basically Barry is responsible for disappearance of Rip Hunter, death of Hourman, destruction of JSA (because Vixen left it) etc. What a hero.