I find it hilarious that the author throws shade at Word for having complex interpolation at https://dave.autonoma.ca/blog/2019/07/06/typesetting-markdow... but then has to veer into which of the multiple different standards and runtimes can be used with Markdown to achieve the same outcome.
Like, it's a good overview of how to achieve these things with Markdown, but maybe let's not hang our hats on "simpler" here, huh?