Yeah I vaguely remember season 4 so I'll eventually get to that in my rewatch. Just watching I ET I got the impression those people could also be some kind of offshoot or link to Earthlings, even their technology is very close to present Day Earth where John left. I mean the clothing, the guns, well kind of, definitely the vehicles and stuff like the radio antennas and fixings. Very earthlike.
I'm working 7 days a week lately