Demanding importance is reasonably hard to grasp. It refers to someone who is vitally choosy and fault-finding. A persnickety individual usually nitpick and sets the bar high when it comes to quality
and flawlessness. Their attention to detail can be viewed as laudable, but it can also exacerbate unreasonable criticism and unjustified dissatisfaction. Being persnickety is regularly related to meticulous focus on specifics but can also be seen as a manifestation of pedantry.