I wasn't aware that Prusa is floundering and wouldn't have minded a little more development there. However it wouldn't surprise me as when I was shopping for my latest 3d printer replacement it was too easy to choose something else. For the price of the Mk4 most of the market is within the same budget (many options arguably better and more capable).
This post is the Armin Ronacher take that the author here is talking about: https://news.ycombinator.com/item?id=38768997