This is a false horizon. See https://en.wikipedia.org/wiki/Ant_on_a_rubber_rope https://en.wikipedia.org/wiki/Ant_on_a_rubber_rope. At least theoretically we s

This is a false horizon. See https://en.wikipedia.org/wiki/Ant_on_a_rubber_rope https://en.wikipedia.org/wiki/Ant_on_a_rubber_rope. At least theoretically we should be able to receive signals from arbitrarily far away no matter the expansion of the universe. They'll be redshifted like hell though, as you say.