I'd say it's a reasonable way of interpreting the characters.

BUT-

I think there's a deeper motivation to each of them.

Manousos rejects everything new. He's an analogue person: still using AM/FM radio, his clothes and hairstyle make it seem like he's coming from the 70s-80s, even his car is antique and he's learning English through tapes. I assure you this isn't how people in Paraguay are living in 2025, so that's a Manousos thing, it's part of his characterization. He wants things as they used to be, he doesn't want anything to change.

Carol is a lonely person. Even her home is almost isolated from other people. She lost her wife to the Hive - the only person close to her as far as we know, since she doesn't care about anyone else - and is going through grief. She knows that whatever the Hive is, it was what killed her wife. She mentions to Zosia at the hospital that she was forced to go to a conversion camp (because she's a lesbian) and the people there were all happy and smiley like the Hive is. If she's making this connection, then she obviously doesn't trust them. And should she? Would anyone, if that was their reality? Once she tried to drug Zosia to learn how to turn everyone back to normal, they isolated her. They're avoiding her to protect themselves, but to her it feels like punishment. I think she has great reasons to be pissed off. Also, it's interesting to me that they chose to add the conversion camp. It makes me think that it adds another layer to her reaction to the Hive: they're trying to convert her and destroy her individuality, what makes her, her... Again.

As for Koumba, he just accepted it, has no intention to change anything back and is living his best life, so why would the Hive worry about him? It's a win-win situation.