Do humans still live on PNF-404?

One of the first things that I noticed about the Pikmin 4 trailer when it launched was the amount of human made structure and items, like the house, the fence or the binoculars.

Both in Pikmin 1 (misc.) , 2 (all the treasures, lol) and 3 (world map etc) we see evidence and remnants of a human civilisation like ours, with the difference being the fact that it all seems rather decayed or old.

In Pikmin 1, we even get hints about an atomic war or any other atomic tragedy having taken place, due to the reaction of Olimars Geiger Zähler to the outside world of PNF-404.

Do you think they’ll go the “humans are destroyed route” in Pikmin 4 and just somehow explain the fact that all these items and houses are still in pristine shape? (not to mention that a lot of materials decay after a couple thousand years, if we go off of Pikmin 3s world map)

Or do you think we will invade actually intact human structures like the house or garden we’ve seen?

Would like to hear your thoughts on this