First, I fully acknowledge that this is my subjective experience. Second, I really enjoy the font as a whole and happily use it in my code editor, so don't take this the wrong way.
I think giving the === and !== glyphs three lines to make it more distinct from ==, != and =\= is a great choice. However, combined with the fact that it fills three character spaces, the glyph becomes more.. I dunno, like a filled in block, which makes it visually dominant.
Not sure how one would fix that though - perhaps making the lines a bit shorter, although might create issues with creating too much empty space with surrounding characters.
Maybe === sign may just take less height?
Fixed in 5.0 along with #383. Enable with ss08
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Fixed in 5.0 along with #383. Enable with
ss08