>>90617408overthinking it. Bae's sister doesn't see Bae as Bae, she sees her sister, so any time she has to talk to "Bae" the reality of Bae being a IP is at the forefront in her mind and congratulating Bae on the brand is natural, and isn't indicative of Bae being any more brand focused than any other vtuber.
Assuming Covers management is competent (which is an assumption), then generating net revenue is paramount, and Fauna brought in far more than she cost. That "incident" from long ago had little to no impact, and nothing of note has been a public issue since. The brand risk is extremely remote. Killing off the Fauna money generator over a contract negotiation where that is the issue is retarded. but Cover could be retarded.