- The glyphs for "ł" and "Ł" are incorrect. The ł should have the
stroke on top of the letter, the Ł should have a horizontal stroke
through the middle like the pound sign.

According to that link, the bars are slanted, not horizontal...
So the advice to make it like the pound sign goes against what the instructions say:
"This letter should not be drawn like the British pound sign!"
Also, all samples of the ł symbol have the slant through the middle, not the top, including all the samples on that page.

So.. are they still wrong? Are you sure? :)

Thanks for the clarification.