So then nothing was actually cut and these weird people who are super passionate about the climate impact of WordPress of all things can continue to do.. whatever it was they were doing, for free as they were before? If the issue is having a slack channel in the WordPress org, they can just make their own discord server. No big deal.
If he can make the channel, he can delete the channel. If the people in that channel want a new place to chat, they can make one. So what's the problem?