You're correct that you can't conclude that evolution is perfection/optimized, but it's also not correct to say it is random. The genetic variation is random, but natural selection is very much not random[1][2].
[1]: https://evolution.berkeley.edu/misconceptions-about-natural-...
[2]: See Number 7. https://www.pbs.org/wgbh/evolution/library/faq/cat01.html
I don't have a problem with that, but materialists don't have that luxury and use language in bad faith when do it.
7 1/4 - 3/4
= 7.25 - 0.75
= 6.5
= 6 and 1/2
I would have assumed that most people would do it this way when they see a fraction that can be expressed as an easy floating point but maybe not!