Misreading a name is not a trivial footnote. Confusing a weak transmitter with a reliable namesake transfers an incorrect biographical grading. Misplacing a later narrator in an earlier generation can create a false claim of direct connection. Treating two people as one can also change the assessment of corroborating chains.
Example: A critic initially treats two apparently distinct lines as independent corroboration. A corrected reading shows that one name was misread and the chains share a transmitter. Their degree of independence—and the strength assigned to the report—must then be reconsidered.
Thus, correctly vocalizing and identifying narrators is fundamental to the historical validity and critical grading of hadith, not merely an ornamental editorial concern.