The twitter knockoffs always “mention” the person they’re replying to.

I block them because 99% of the post they make they don’t mean to make, and they never seem to understand what’s happening, explaining is just a waste of time.

But as long as they “@ you” you’ll still get new notifications.

If you’re talking about wanting to just get rid of their replies that are still in your inbox without clearing it…

Not sure why, but at least on my instance there’s a green check to acknowledge a notification and it’ll go away