Nagito literally ruined their lives

I'm in the middle of watching the anime (no spoilers pls) and oh my god. Nagito only interacted with Seiko like twice, and each time he only served to completely fuck her over and upend her entire life just because of his luck. Seiko wouldn't have been blamed for the laxatives nor the bomb if Nagito wasn't involved. I just think it's really funny and kind of sad that Nagito ruined someone's relationship and future and he doesn't even know it. I wonder how many people have been affected by Nagito's luck like this. At least Hope's Peak managed to deduce that Nagito was behind the bombing and suspend him (which I also think is hilarious. that boy needs to go to a mental hospital I don't think suspension is enough to keep him away.)