> Modern Haskell has diverged to such a degree that it seems to be (almost) impossible to define a common standard. Even if they would, as long as there a over 100 language extension (increasing over time) there will be developers using them. Take a look at C++20, I think it's obvious that C++ is beyond repair at this point in time, even if you wouldn't add any more language features.

I disagree. C++20 is a standard, even if it is ugly and terribly complex it is being implemented by three separate compilers. And look at Javascript. The attention given to it is starting to show, making the language neater than in the past. The task is not straightforward but the point of the article is that there is absolutely no manpower ready to do it. I think that a few dedicated people could do the work well.