I disagree. If the Johnsons are still the owners of the company, then by all means, they are still part of it, whether they are involved in the daily functions of the company or not. If they are still the owners, then they still run the show and can call the shots. As I recall, there have been no news of the company being taken away from them, being put into receivership, or anything like that.
Maybe we need to ascertain whether they are still the owners or not. I bet they are.
If the Johnsons still own the company, then any discussions about them are NOT off-topic and should not be deleted, as long as the posts follow the board's rules.
I personally believe that since the Johnsons are responsible for the situation the company is in now, until it is confirmed they are no longer associated with the company in any way, discussions about them are still relevant.