That makes sense. I did ninja edit, probably as you were commenting, about how I've been using 10 years and only lately like hugo, but have no issues regardless.

Github has been fairly stable as a markdown center of gravity. That works fine for me too.

For me, I don't find the need for 100 year compatibility to be a stopping point. 10-20 years is far away enough for me, otherwise the perfect becomes the enemy of good.