If you have already seen my post, I apologize for the double posting.
I just discovered something.
If you are on the page where the threads are listed, in the upper right hand corner is a circle that if you click on it, allows you to choose how the website will notify you of a new post. It seems to be done by category - that is, if you select to “All Categories”, it disappears, but if you only look at - say - “General Discussion” which is where this thread is, you can deactivate the notification.
The thread goes on, but you just don’t know about it. (or I think that’s how it works.)