Demanding meaning is rather difficult to understand. It refers to someone who is extremely selective and disapproving. A persnickety individual usually nitpick and sets the bar high when it comes to criteria and excellence. Their fastidious nature can be perceived as commendable, but it can also exacerbate excessive criticism and unjustified dissatisfaction. Being persnickety is typically related to detailed attention to detail but can also be seen as a type of obsessiveness.
