^^To be fair, one of the natlan world quests actually mentions how some natlanians doesn't have phlogiston control. One of the npc's we meet talks about how she's spent her entire life trying to do so.
(rip.)
And I don't get what you meant by memory issues? Natlanians doesn't have memory issues and neither does bennett, no?
(While I'm not saying they are related ; I don't personally think they are as it's likely a coincidence, I don't think its strange to raise the question. Several siblings in genshin look alike. The only ones that don't are adopted.)
With the extremity; if its a fatui soldier then its not far fetched.
Like, not saying their extreme. But in the 4.6 area, A fatui soldier was literally about to kill someone with no evidence or reasoning because he thought the name of the person was similar to his target.
And almost every fatui soldier in the wild attacks us. Their kinda a wild bunch. I mean, Arlecchinos orphanage literally trains them to be assassins.