A way to exploit duplicates with trypophobia traits, apparently if a building is placed in an area that isn't dug out yet, the duplicates will dig it out in order to build the structure which is normal. The thing is, the duplicates with trypophobia will dig it out to build the structure, hence a player can place down structures to dig out an area with a duplicate that has the trypophobia trait and cancel it once its dug out.
I've included an image of one of my duplicates with trypophobia doing some digging.
1. Get a duplicate with a trypophobia trait. 2. Place a structure in an are that isn't dug out and arrange priorities so that the other duplicates are occupied. 3. Watch the duplicate with trypophobia dig out the area for the structure.