Type declarations are similar to Haskell's. Haskell is also whitespace dependent.
That's not what makes Haskell what it is. It's not the type declaration syntax or the white space awareness. In fact those things are so superficial that they might as well not be mentioned.
While this is true, the post lists 9 specific examples of features directly below that quote, of which 5 are found in haskell. He never said he tried to capture the essence of Haskell, simply that features in his language were inspired (in part) by Haskell.