No, not for the whole season. Someone on reddit literally did the math, min-maxing air dates with sub costs/cancellations between breaks, and the absolute cheapest way to watch an entire season of Discovery is $24. That's with commercials. Without commercials, it's $40.
The point is that the buy-in is expensive enough to give most people pause, on top of the hastle involved in subscribing/unsubscribing at regular intervals. I don't understand how CBS expects people to go for it, especially when they won't allow early screenings for critics.