"Perfection" is a term that is dependent on the identification of flaws in relation to a set of goals or expectations. The accuracy of the term "perfect" requires context to define the boundaries for identifying flaws. Different perspectives can lead to different assessments of whether something is "perfect" or not, depending on the values, reasoning, and goals of the individual.
For example, when someone says "This room is perfect," the statement does not hold much meaning without specifying a perspective or goal. To make the statement more accurate, it would need to be modified to something like "This room is perfect for me" or "This room is perfect for my office." This provides the necessary context to understand the speaker's perspective and goals, and helps to define the boundaries for identifying flaws.
When a deity itself is the standard for identifying flaws, it becomes a circular argument. It's equivalent to saying "God is perfect because he is perfect." This type of statement doesn't provide any meaningful information or insight into the deity's nature or qualities, it simply states the speaker's personal perspective.
Additionally, the use of the term "perfect" in relation to a deity can lead to narrow-minded and rigid thinking. People who strongly believe that their deity is perfect may objectify and fixate on what is actually their own personal view of perfection
An over-reliance on one's personal view of perfection can limit the ability to identify flaws and self-correct.