For those that don't know, on Settings > Appeaarance there is a setting for "Use a fixed-width (monospace) font when editing Markdown". It's already a good QoL improvements (and it should be the default, honestly).
At the time I created it, I worked on Windows more often and I had a lot of trouble trying to find a Make build that works fine on Windows. The ones available for Windows are usually incompatible with the GNU version. So cross-platform support is one advantage of alternative tools.
Other than that, Task has a lot of features, so some use cases are not covered by Make.
That said, I'm not a Make hater. If it works for you, that's absolutely fine. Many people has found value in Task, though.
Good thing that more and more site and apps are supporting dark modes as time passes. Many supports automatic switching based on OS/browser setting as well, what is great.
I dream with the day where this extension won't be needed anymore. Hopefully HN itself will support it someday.
I have it setup to enable according to the system. Also, I use the whitelist mode, so I enable on specific websites instead of having it enabled for every one automatically.
So, not an exclusivity of Hetzner for sure.