After re-reading I think I see that point, but I still don't understand the overall comment...
Is the author saying his standard language is C++? Everything I know about Midori said that it was competitive with C++ on performance in almost every way. Regarding error handling in particular, Midori used a combination of returning values and safe exceptions, both of which seem similar to C++.
It also explicitly doesn't have the aforementioned conflation of bugs and runtime errors.
One of those is routine.
The other is a serious logic error that strictly speaking a correct program cannot be said to do.