The article is actually written informatively, but for anyone else who may have assumed from the title that this is some failing of Unicode–it is not, the goal of Unicode is to encode all human writing. This includes “nonsense” glyphs that have been widely used or interchanged between computer systems, including the (in)famous “RIGHT ANGLE WITH DOWNWARDS ZIGZAG ARROW” (⍼).




*we have a typographical source that claims it means azimuth, but no known usages of it
I think Wikipedia’s summary of “unconfirmed branding” is a fair description.