Well personally not for me no. It all depends on ones interpretation. Tomorrow's harvest has never had the common nuclear apocalypse theme for me.
The bros have said TH shouldn't be taken at face value. Also I think the specific time period of the BoC sound for this sequel will be slightly in the future from last time. It was very cold war and 50s-70s sounding to me on TH with numbers stations etc, Now we are getting more industrial, Darker, Even more sinister, Less arpeggios and more blade runner/terminator vibes. The future.
I've always seen the theme of TH as an invasion, But not by humans. The aim was to wipe out the failed human experiment rather to sterilise the planet. But humans aren't extinct, we regroup, re-evolve and continue destruction of our world.
There are numerous references in TH regarding non human intelligence if you look closely.. Project Gemeni anyone? Telepaths?
Telepath reminds me of the supposed telepathic alien interview, Deep black projects use telepathic communication more to communicate with NHI than to supposedly launch nukes telepathically apparently.
Some UFO enthusiasts and conspiracy theorists have suggested that certain Gemini missions encountered unidentified flying objects during their spaceflights, or that NASA's interest in space exploration was partly motivated by a desire to investigate UFO phenomena.
There are some more subtle references I need to research.
Lastly the Close Encounters theme is blatantly obvious, Why would they use that for a nuclear war?
No, Phase 1 has begun, It is time for Phase two, Send in the terminators to finish the job and put an end to the failed human experiment.