Morrissey

I've never heard Marr say anything critical of the Smith's material, all positive and it's the only aspect of the band he really talks about. He even focusses on almost solely on the guitar parts (fills up a bit interview if he drops some riffs in, he's always holding a Fender).

I've also only heard one person publicly grumble about Marr, and it wasn't Taylor Swift...
He's almost universally loved in the industry 🤷‍♂️