Yes, it seems that it is based on the mutual antipathy between Ross and Bernie. e.g....
Those familiar with Total Competition, a book on lessons in executive strategy co-authored by Brawn and former Williams chairman Adam Parr, will have gleaned that both experienced bruising run-ins with Ecclestone. Indeed, both make clear their beliefs that Ecclestone played parts in their respective downfalls.
A particularly telling paragraph, attributed to Brawn and written before CVC confirmed Brawn's appointment as MD and Bernie's emeritus role, reads: "[Ecclestone] will go and meet his maker one day, but no one has managed to depose him; you can't go to CVC Capital Partners and have an argument and think they will override him. There is no higher authority."
Another passage is equally critical of Bernie: "So it's frustrating that even pretty senior individuals in Formula 1 will not have a long-term vision or plan...and Bernie's one of the worst. Someone's got to fix it by implementing a proper strategic plan, or it's going to suffer even more.
"I can't remember a time when Bernie initiated a fundamental strategic change in Formula 1. Any of my experience of him in meetings is that he always comes up with something which is so diverse, so divisive, that it never takes off."