Reasonable and sane behavior of cd. Just get into the habit of always using lower case names for files and directories, that's how our forefathers did it.
This is completely unrelated to the meme at hand, but the title just reminded me that for a while, Merriam-Webster mistakenly included the word "Dord" to mean density - because an editor misread the entry for "D or d" as an abbreviation of density.
I love how many people brought up the Turkish "I" as if everyone here is on the Unicode steering committee or just got jobs for Turkish facebook.
I, an English speaker, have personally solved the problem by not having a Turkish I in the name of my Downloads directory, or any other directory that I need to cd into on my computer. I'm going to imagine the Turks solve it by painstakingly typing the correct I, or limiting their use of uppercase I's in general.
In fact, researching the actual issue for more than 1 second seemingly shows that Unicode basically created this problem themselves because the two I's are just seperate letters in Turkic languages. https://en.m.wikipedia.org/wiki/Dotted_and_dotless_I_in_computing
If you nerds think this is bad try doing Powershell for any amount of time. It is entirely case-insensitive.
There are two Linux paradigms that I consider stupid. One is the use of centralized software repositories managed by the distro instead of individual developer maintained installers. The other one is file system case sensibility. They already admitted defeat on the first one with the rise of containerised applications. I wonder how much longer they'll keep the charade on the second one.