In the given example above:
A and B are miai
If W blocks at B, W cuts at A and threatens D or C.
If W connects with A or G, B still can enter at E.
In any of above cases, the marked feel dead.
That's why I tried to find any good way for White in above situation - however to no avail.
If so, then above allegedly bad blighting sequence is actually a good one, isn't it? tderz
This sort of thing often happens in beginner games: