Disagree with this. Streaming services are a larger market share now than cable. The difference is tiny, but it will continue to grow. Almost all streaming services carry the CW. It's a national network, so you can toss up a digital antenna and get it if you want to watch. Many more viewers will be able to watch ACC Sports with this deal.
The RSNs and streaming services often fight over carriage rights for whatever reasons. I live near the DC area, and MASN is not on YouTube TV. Now MASN is interesting because it isn't part of a group of RSNs and is independent. But even the grouping of RSNs (before Bally went belly up) meant streamers had to pay a premium to access those channels.
This is a win for everyone. I would assume Spectrum and every other cable service in the country carry the CW on its basic tier as it is considered a network like Fox or NBC. I'm not sure why this would be bad news.