You can nullify ALL the negative traits with tech, though, so it's not like this is an unusual situation, e.g. Atmospheric Filtering undoes the effects of Solitary.
I see your point, but i'd argue that it'd be easier to nullify a "short lived" trait since the techs that increase lifespan that we've seen so far (like "Genome Mapping") is in the lowest tier of society tech (240) and was one of the first techs drawn in both the blorg campaign and the quil18 video