Don't know about oversized, it felt partly more that eg. Baker was mostly interested in Mozilla as a platform for activism, not in making a good tool for users. The new interim CEO seems to have breathed life into actual browser development.
We'll see what happens as the lawsuit unfolds, but I'd be pretty surprised if there is proof that the discrimination was health-based and not due to the fact that he was the CPO who worked with Baker during whatever it was that made them decide to fire her.
[0] From the complaint:
> The board decision to removle Ms Baker was so abrupt that they did not conduct a search for a successor, resulting in the naming of one of their own board members, Ms Chambers, as interim CEO.