It's not that bad. I'm sure there are more LLM'ers in there than the one, but you can tell that the majority of the day 1 leaderboard is made up of people who have historically performed well, even before LLMs were a thing.

Compare https://adventofcode.com/2024/leaderboard/day/1 to e.g. https://fuglede.github.io/aoc-full-leaderboard/

There was also at least one instance of people working together where you would have 15 people from the same company submit solutions at the same time, which can be a bit frustrating but again, not a huge issue.