Demanding sense is fairly
hard to grasp. It refers to someone who is immensely particular and fault-finding. A persnickety individual often be fastidious and does not settle for less when it comes to standards and flawlessness. Their fastidious nature can be regarded as praiseworthy, but it can also lead to unreasonable criticism and avoidable dissatisfaction. Being persnickety is typically related to precise attention to detail but can also be seen as a form of pedantry.
Persnickety Definition Meaning MerriamWebster