The template of this meme is that of the man who cheerfully points his hand at a butterfly, asking “Is this a pigeon”?. In this meme, the man has been covered with icons of the applications IntelliJ, VSCode, Chromium and Signal. The butterfly which he points to is overlaid with the caption “.config”. He asks “Is this a trash can?” At the bottom of the image, we see the command du -sh executed on the directories .config/chromium/ and .config/Code, yielding file sizes of 1016M and 83M respectively.
I think the best practices on Windows are pretty similar to Linux, other than Windows usually using title case whereas Linux usually using lowercase. There’s bad developers on both platforms :)
Windows equivalent to XDG_CONFIG_DIR is %appdata%, which is the roaming AppData directory.