Here are a couple counter-points that come to mind:
Linus explaining taste in code: https://www.youtube.com/watch?v=78Y17hAo96I
Fast inverse square root https://en.wikipedia.org/wiki/Fast_inverse_square_root
Being a humble rank-and-file programmer I did produce pieces of code that I will be proud forever as well, e.g. this snippet to control the length of $PWD in bash that I still use almost unchanged 25 years later:
# How many characters of the $PWD should be kept
local pwdmaxlen=30
# Indicator that there has been directory truncation:
#trunc_symbol="<"
local trunc_symbol="..."
if [ ${#PWD} -gt $pwdmaxlen ]
then
local pwdoffset=$(( ${#PWD} - $pwdmaxlen ))
newPWD="${trunc_symbol}${PWD:$pwdoffset:$pwdmaxlen}"
else
newPWD=${PWD}
fi
Not to rain on your fine snippet but you can use negative offsets to index from the end of the string: