I disagree. Lawsuits could also be rightfully characterized as signalling mechanisms for predatory (but still ethical) commercial opportunities, social ills and/or exploitation of same, poorly constructed laws or regulations, reasonable disagreements, and probably half a dozen other situations. Not to mention that the ethical problems that could be signaled by a lawsuit might be those of the plaintiff, the defendant, or either of their legal teams. Or all of them together.
Hmmm, I suppose that could have been plainer. I disagree with your assertion that - as a general rule - the existence of a lawsuit necessarily signals ethical concerns relating to the defendant.
As for "it", if "it" was not in the text of one of the comments leading up to my post, I probably did not read "it". In any event, I doubt that further knowledge of "it" would have substantially modified the nature of that assertion you made.
The actual subject matter of the lawsuit you've been referencing is only of marginal interest to me (and is irrelevant to my comment), and I didn't feel like looking through the claimed hundreds of pages of materials, or addressing the merits of a case that is already in the hands of professionals.