Not really but carry on.
If it helps, the first reason you've related for Marr dreading getting Morrissey's lyrics has no foundation either: Marr has repeatedly expressed his admiration for the lyrics, how exciting it was to hear them for the first time over his music and how he and Morrissey...
Frayed knot. It's pretty well established that nearly all the words and music were written separately and that Marr presented Morrissey with the music with no knowledge of the lyrics that would be used or how they would be sung.