Eye movement
Regardless of whether a language employs left-to-right or right-to-left reading, in order for a word, any word, to be comprehended easily you can't ask the reader to "zig zag" mid-word.
While I would have never deciphered the actual name from this mark... once I know it's supposed to be "dahua", it's clear the designer is asking the user to read d.. back up, then read a... then skip the pseudo-J/l... and read "hua".
If one removes color from the mark, the eye movement is still a "zig zag" if the mark (name) is to be read correctly. That zig zag is not normal behavior for readers. The designer is asking the viewer to essentially ignore all they have ever learned about reading a word.
- Given color breaks, the flair of the d is pushed as a possibly separate and unrelated element, leaving that red vertical to be interpreted as a J or l (as @Tetsujin mentions in his answer). Without color, there's really a strong sense that it's a J or l.
- There is greater letter spacing around that first
a
- which is more apparent once color is removed. This promotes the idea that the a is somewhat separate, or the start of the word.
- Because the heavy, vertical, stroke of the d falls after the a, it promotes the perception that, even in the unlikely event the d is read as a d, it falls after the a.
The eye must perform hurdles if the company name is to be deciphered from this mark. The eye is all over the place, making for a bad mark.
Good marks have intentional, fluid, motion which lead the eye rather than asking the eye to do summersaults.
Anyway I see it, I read either "aJhua", "adhua", or "alhua".