Not entirely true, as these traits have lingering effects. The only ones you can really get rid of by grinding are the ones that lower your starting strength or fitness.
Slow Metabolism will make it easier to gain weight, which could be seen as a perk if you can drop the overweight trait. Fast Metabolism does the opposite, where it will cause you to have a harder time gaining weight.
All of the panic related negatives don't ever really go away, your panic regen simply begins to outpace the panic they cause once you survive so many days. Most of them have other negative effects that are not listed in the game which you can look up on the wiki. One example is Fear of blood causing a buildup of stress and unhappiness from wearing bloody clothes, something which can be quite annoying to deal with all the time.
If your willing to grind forever, the ones that reduce XP gains effectively do nothing once you max out your skills. Emphasis on grinding forever though.
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Moose65 ·