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Context: LaTeX is a typesetting system. When compiling a document, a lot of really in-depth debugging information is printed, which can be borderline incomprehensible to anyone but LaTeX experts. It can also be a visual hindrance when looking for important information like errors.
You could have used a thin space every four or eight hex digits, showing that it is not really a space but making it easier to read.
But you cannot blame TeX for not being able to break such a construct.
Oh I don’t blame it at all, I totally realize I threw a weird edge case at it! If it sounded like I was slagging TeX I didn’t mean it that way at all.