My trypophobic duplicant Max has apparently overcome his fears! He goes idle for normal digs, but appears to have no problem with construction digs. Although it's a wonderful miracle for him on a personal level, I think this is a bug. He seems to only do it when he has no other tasks queued, but I may be wrong about that.
Steps to Reproduce
Tell dupes to dig an area, trypophobic dupe digs even though he shouldn't
This issue has not been confirmed by a developer yet.