Prodigy lived there for its entire life until it was evicted a month ago because someone thought the tax writeoff and pinching off residuals on the one show that wasn't really making its ROI was better business than continuing to be the archive of all things Trek. One presumes the Star Trek wing failed to convince Paramount proper that the very franchise that justifies the entire platform's existence gets to eat free under its own roof even when its little side projects aren't making bank. By all appearances, a month ago, and while they were already wrapping postproduction on S2, is also when the Prodigy team actually found out.
In short, Paramount Plus is already owning itself so hard with this decision that I won't even be surprised if they send the show direct to home media out of spite. The Prodigy folks releasing a trailer now without any service to mention where viewers might actually expect to see it is basically counteradvertising against PP.
If there's justice in the world, Prodigy will simply get picked up by another service that, unlike Paramount, will actually support it enough to get some eyeballs on it so somebody gets paid. But Paramount already made its decision to jump onto a bandwagon of streaming services that were already getting significant flack for delisting their own content before Paramount hopped on. What are they going to do, throw up S2 by itself for a week and then delist it again? I'd love to see them falter in their determination to fail at their one job, but I'd have to understand the mind of the executive who decided to drop Prodigy like a week after they finally got rights to run all the TOS movies, which is to say, a drooling imbecile with some serious cojones.