nmtake

Some applications can't display some Unicode strings like s̵t̵r̵o̵k̵e̵, so replacing Markdown element like ~strike~ with Unicode equivalent (s̵t̵r̵o̵k̵e̵ ) may not be a good idea if you want portability. I opened your post in text editors and noticed that neovim-qt drops s̵t̵r̵o̵k̵e̵'s combining characters (issue on Github) and just displays stroke instead of s̵t̵r̵o̵k̵e̵; GUI Emacs with my font settings (Noto) doesn't combine the characters and displays s-t-r-o-k-e- (as I said, this may depends on font settings).

Cheese Day

One of the reasons is it makes moderation (including soft moderation by users like downvotes or reports) harder. Users not familiar with Japanese can't decide whether the post follows the rule and is on topic.