I think we should determine a point where the audience should stop watching, so they don't get disappointed in the end.

For me, it should be when Hui-Ju becomes the Spokesperson's interpreter live and side-to-side (I don't remember the event). Stop after the speech done.

(It is still watchable for like 1 episode after that event, but what for? The plot is pointless).

The public has the right to make whatever decision they want. Even though I may recommend something, people are not obliged to listen to me. I have seen Love Alarm and I always said it was bad, but I never I said how far they had to stop, that depends on each person