Unfortunately the worries we have expressed on a post from about a year and half ago, regarding NASA announcement that its space telescope Kepler spotted the most similar planet to Earth that has ever been discovered (Kepler-452b), got more relevant with the new discovery of 7 earth-sized planets.
So far scientists can’t make further observations regarding those planets such as the composition of their atmosphere, their temperatures and the surface pressure. Also, although they are much closer to earth than Kepler-452b (39 light years compared with 1,400 light years), it is still way too far. So despite that currently these planets are far from being relevant as a habitual option for humans, as the finding of a potential habitable planet gets closer and closer, the necessity for the destruction of this one must get clearer and clearer.
Please read our argumentative post about the discovery of Kepler-452b since it is relevant to the planets orbiting Trappist-1 (especially E,F and G) at least as much.