The cancellation in the denouncing seems … sort of obvious.

It seems obvious, but I also don't think it's optimal depending on what you are trying to do.

In some scenarios, e.g. bad mobile internet connection, you may also be happy with a slightly stale result (where you still have to ensure correct ordering of responses), depending on how the search overall is implemented.

One additional data point: Algolia used to do query cancellation in the past but stopped doing that (I think at least 5 years ago now), which you can test with the HN search. I'm not sure about their reasoning, but for them that seems to be the best overall default search experience.

yes, i was very annoyed