As a compromise...
MikroTik could at least add need tags to load the font into cache so can be used in CSS to even see what it look like. e.g. something like this:
...
<link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:ital,wght@0,100..800;1,100..800&display=swap"
rel="stylesheet">
...
... so it at least be an option for theme/custom CSS... even if not "default".
And perhaps the CSS for code blocks in posts of type ```routeros could use it. Highlight.js that's used for rendering the code block does have CSS descriptors so it could be limited to just those blocks.
Now Highlight.js V6 only coloring is actually more annoying than font selection...