In the latest edition of the Wrestling Observer Newsletter, Dave Meltzer discussed JBL leaving SmackDown Live commentary in which he brought up Mauro Ranallo who he claims didn't have his main issue with JBL but the culture backstage which was headed by Vince McMahon: 

Ranallo’s primary issues were not with Layfield, but with the culture in place at the time headed by Vince McMahon. Layfield was part of it, but not the key part of it. Layfield’s actions were the straw that broke the camel’s back in a situation that has been resolved enough to where Ranallo returned with the proviso he’s working and reporting to Michael Cole and Paul Levesque, neither of which he ever had any problems with and they were the two people who recruited him into the company in the first place.