This is a Usenet Newsgroup and has no moderator. Usenet was created and popular in the 1980s well before the Internet was afflicted with significant uncivilized creatures.
Usenet is a highly distributed network of servers that maintain newsgroups Newsgroups can be moderated or unmoderated with the vast majority, like this one, as the latter. If this were a moderated newsgroup every post would require the approval of a moderator. This would eliminate the noise but would place a large amount of extra work on the victims designated to moderate the group.
The bottom line is that this old technology depends on having good citizens. There are more than enough cretins who are bad to make it annoying.
Should you wish to know more about usenet you can read some good information at or near
https://en.wikipedia.org/wiki/Usenet