Mine says I've denied permission for notifications, and that works for me; I never see them. I think Chrome itself asked me if I wanted notifications from the site, and I said no. There should be a way to change the answer in the browser, if not in the forum itself.
(I usually have the site open on a second screen, so notifications are just an annoyance for me as well.)
What I see there seems to indicate that I could enable notifications which would seem to imply that they are not currently enabled. Also I don't think I got any notifications relative to this thread, but I recently did for another thread which prompted the question.
If I'm not getting any now, for whatever reason, I'll leave well enough alone and com back here to investigate further if I start getting them again,