We already discussed this in the Discovery S4 thread
Star Trek renewed for Season 4
I actually don't "get it" for viewers outside of the USA who cannot access the Paramount channel.
It isn't just that after three seasons on Netflix, Season 4 isn't going to be there, but for a while they pulled every earlier Star Trek episode and series from Netflix too (and will do so again from that link). Also, you can see it in the UK, but only by both subscribing to Microsoft 365 or Google Play and then also buying it. The total cost of doing that is in the region of £50-60 and it is not that good a show to pay anything like that amount. Alternatively, you can watch it legally online via Pluto TV but only live at 9pm on a Friday night.
Are they trying to destroy their audience?
I believe that they don't give a tinker's cuss about the audience outside the USA any longer, just as long as they can make enough money there. Picard and Strange New Worlds look like being the same as Discovery unless some agreement is made (and it doesn't seem very likely).
This isn't new though. As I said in the other thread, the Virgin/Sky spat meant that after 10 seasons, the final episode of Stargate SG-1 was never shown, or the fact that that a whole raft of other US sci-fi shows have never been shown on UK TV at all.
They are just accountants. They don't care about fans, merely about the dollars. Then they'll cry about film spin-offs not making money at the box-office or that so many people share by torrent websites as if those are totally unrelated to the lack of availability.