The font's are busted, because I block as much google services (and other social media) as I can without breaking the site.
I don't think a link is necessary, just check the TOP100 on the leaderboard whenever you feel like it. All of them have physically impossible amount whether it's anime or manga challenge.
https://www.anime-planet.com/users/tiliplas/challenges/2019-anime-watching-challenge
https://www.anime-planet.com/users/RoxanneBtz/challenges/2019-reading-challenge
Since there is an option to reset the list, it's not an excuse that they just set up their accounts and joined the challenge before importing their lists.
A popup message like when you level your challenge status to everyone who has an impossible anount of media that you have 3 days to reset your challenge or you'll be disqualified.
Even if everyone above the extreme like assuming it's possible to consistently throughout a year to only sleep 6 hours every day and spend every moment awake consuming japanese media would be disqualified would make things cleaner. And that still means some can claim they watched as close to much a year as I did in my life and I'm not a particularly light weight anime watcher.