But buying it did.

Sounds like a good time for a black block

To be even more explicit on the last point, that means regularly updating OpenWRT and all your containers, not just the server’s base OS

deleted by creator

Not true.

He can’t prevent anyone that received the code under the GPL from using (and distributing it) under the old license. He also can’t relicense code that he received under the GPL only under the new license.

If he receives a new license from the other contributors to distribute under a more restrictive license, he can do that because he has a dual license to the code and is not relying on the GPL for his right to distribute.