Brett Tuggle Dishes the details to Rolling Stone

[UnwindedDreams]

Originally Posted by SteveMacD

As for not doing the new record, all she would need to say is that she didn’t like recording albums with Lindsey and that life’s too short. It’s not like that was a deep secret. She could even have said that they were free to fire her if they had wanted.

She could've said that and that she would only tour and not record with Fleetwood Mac, but she didn't say that. When RS asked her why she wasn't on Buckingham McVie she said "I've been on the road since September of 2016, so I don't understand their premise." She made it like they didn't wait for her to record and was thus not truthful.
Buckingham McVie started recording in early 2014. She chose to go to Nashville, which is her choice. Buckingham McVie did actually chart higher than 24 Karat Gold did in the United Kingdom.
There was a Mac break from mid July to October 2015. She didn't start 24 Karat Gold Tour until September of 2016.