That’s pretty dubious, otherwise why would I get all these replies from 3-7 years ago? Not new replies on dead threads, but the replies were posted that long ago, and I’m being notified about them now as “new” comments. Seems a lot like deleted posts coming back.
I tried it once or twice and it worked well. It’s too stupid now to be worth the attempt. The amount of time spent fixing its mistakes has resulted in net zero time savings.