As a begginer programer, I find this relaxing and attitude shaping. Thank you for this.

not a kata issue

This is overly critical; it's only "bad" if it doesn't do what it's meant to in an acceptable timespan. Premature optimisation is an antipattern.

Programmers waste enormous amounts of time thinking about, or worrying about, the speed of noncritical parts of their programs, and these attempts at efficiency actually have a strong negative impact when debugging and maintenance are considered. We should forget about small efficiencies, say about 97% of the time: premature optimization is the root of all evil. Yet we should not pass up our opportunities in that critical 3%. - Donald Knuth