Heh, I think a barely different glyph introduces more ambiguity than it solves. On my screen it’s effectively the same glyph but now with “oh, well it’s actually different.”
I noticed that they are pretty similar in some fonts at small sizes, but in traditional math fonts and handwritten, these operators tend to be very "curly" and easy to distinguish.
If he is comparing meaningfulness as the parent comment would imply, then he has it right.