This is a nonsolution. It’s been a bit since I tried, but a couple problems here. First, it’s not intuitive. It should be integrated into the actual code block logic. Second, the snippet has to be a standalone comment, which is not always sensible, as sometimes you want it with or between some text. I feel like there were also issues I had with editing or mobile related to this.

Text snippets are not an acceptable stand in for what is otherwise a wildly basic feature, ubiquitous on many other platforms.