I thought so too. But my dude, how does that make any sense? God literally talked with the guy and didn't seem particularly hostile. The very next moment he's sending personal drones to murder the guy? Based on what? A pseudo conversation?
Personally, it would make more sense for it to be Blast, to be honest, but maybe Garou is right, for some reason. Maybe there's a prophecy. Maybe God is just Agro over Orochi being turned to paste, I kind of wish they would explain it all better to be honest.
God's influence and contamination.
Unverified and practically head canon to be honest. As Genus explained monsters are made, when they aren't artificial or species-oriented anyway, when people become a different species through strong emotional distress. Phoenix Man also reveals that it occurs through overcoming a kind of death, something Garou also did many, many times.
God, however, directly interacts with his victims whether they be Homeless Emperor, Flashy Flash, Saitama, Garou, Psykos or Tatsumaki.
I'm not going to kid myself and say it's impossible, but currently I haven't seen any evidence that God has somehow managed to mind control hundreds of victims to do his bidding, stopping by peoples door like some kind of eldritch salesman especially since Blast doesn't seem to find any issue with leaving Earth despite being directly pitted against the guy.
Now I need new peak fiction to read
I'm Really Not The Demon God's Lackey is surprisingly amazing and even has a Saitama reference. It's a fantasy isekai that often goes into cosmic horror with charming characters. Like Murata the art is gorgeous with a surprisingly fair amount of fight scenes though you'd have to go through a lot of reading first and it highlights just how aesthetically pleasing the characters can be. Unlike One, I should warn you though, the artist likes to leer at the characters with close ups of their...assets regardless of gender which, depending on your personality, might make you annoyed or uncomfortable while reading it.
Cultivator vs Superhero is unfortunately not peak, but if you want to read about a parody piece of fiction that makes a commentary on the superhero genre (albeit not really a good one imo) with an OP protagonist it should be enough as a time waster. Unlike OPM though, the characterization of superhero societies are so out there that it really comes off as more disturbing than a funny or intellectually intriguing take on that kind of media.
Any superhero fiction that includes magical girls and power rangers can't be that bad though...right?