That plate with info about us, where to find us... not smart, naive. I get that 70s were probably way more enthusiastic and open minded re space space exploration compared to rather bleak times now when greed often takes prime and Star Trek TOS probably had its effect too, but next time we should do better.
Dark forest theory sounds more rational conclusion on long enough timescale than Star trekkish utopias. Although, in next million years, if intercepted it should be trivial to pinpoint where it came from just from trajectory.
Hopefully we never see a photoid collapse us into 2D space.
OTOH, back in that period of the Cold War, the odds seemed long that we'd still be around by the time it was found, out in the endless vastness of space.
Discussing those odds at length would no doubt decrease them.