> comp.lang.tcl has been identified as containing spam, malware, or other malicious content.
This type of ban isn't new for comp.lang groups. In 2020 comp.lang.forth and comp.lang.lisp were banned with the same message: https://support.google.com/groups/thread/61391913/some-usene.... The response from a person with a "Gold Product Expert" badge in the support thread was that "since the Usenet newsgroups doesn't have owners there is not any way to appeal the Ban".