The number of irrelevant/unneeded clues is to me an overrated metric for judging puzzle quality. Some puzzles are certainly constructed with the intent of forcing a lot from very little, but that’s certainly not the case with all of them, and the only possible time it should be prioritized over the process of the solve is when a specific and worthy aesthetic depends on clue minimality.
It’s also my opinion that Yajisan Kazusan specifically does better with irrelevant clues. Giving only what’s needed and nothing more can occasionally make the solution path obvious and open doors to meta logic.
Enjoyed this one a lot. Agree with the general opinion that the break-in is really nice.
About the clue relevance discussion above, I don’t really think it matters much either, unless you’re trying to get a specific idea out there. As long as the irrelevant/unnecessary clue doesn’t hinder the intended solution path in any way, I think its fine.