Oh, no I love the idea of a time capsule in space. In fact, given how cheap some mylar (for detection) and silicon (for inscribing information) is, I think "we" (humanity) should put a bunch of it up there. Like they Voyager probes, but MUCH more data, and maybe in orbit around the sun. But it's not something to rely upon as backups - but very nice as a message into curious explorers of the future.