Fussy significance is rather difficult to understand. It refers to someone who is exceedingly picky and critical. A persnickety individual often pay strict attention to detail and has high standards when it comes to quality and perfection. Their attention to detail can be regarded as praiseworthy, but it can also exacerbate excessive censure and superfluous dissatisfaction. Being persnickety is often related to thorough attention to detail but can also be seen as a manifestation of perfectionism.

persnickety in Traditional Chinese Cambridge Dictionary