For me it works fine, but I guess that might be because I use the flatpak version of Firefox.

It’s Markdown syntax. You can actually format it nicely in a code block:

bool isEven( long long x ) {
  if ( x < 0 ) x = -x;
  if ( x == 1 )
    return false;
  if ( x == 2 )
    return true;
  return isEven( x - 2 );
}

You do that by adding ``` above and below it. To force single line breaks, you can terminate your sentences with two spaces, or a backslash.

A non-political event, eh? Interesting: https://www.theguardian.com/tv-and-radio/2022/dec/30/eurovision-chief-russia-ban-stands-for-ultimate-values-democracy.

For general usage, it doesn’t really matter. Distrobox is inspired on toolbox and provides some added functionality and configurability, like init scripts and the ability to run different distros, as well as creating desktop shortcuts on your host system. If you don’t need all of that, I’d stick with toolbox, as it’s preinstalled and works well.