But for my perspective cover using this L2D stream as "cover" for she getting inflamed about her other social media and about her real identity.

Of course. The idea that the suspension is really for the technical test L2D stream is ludicrous. Such "breaches of contract" happen all the time, everywhere, in every corporate environment and large institution. If every such breach required an apology, no organization would be doing anything but having their employees apologize all the time.

The point here is that the usual degenerate troglodytes doxxed the talent, and Cover is pretending to do something. Of course, if Cover really wanted to protect their talent, they would pursue criminal charges against specific individuals and open a formal investigation with the police, rather than go full tatemae and pretend to berate their talent for breach of contract, whispering "just lay low until the shitstorm passes". But the legal environment in Japan is such that such an investigation will likely go nowhere and Cover and the talent will be the only ones to be hurt.