So in this case, if you deposit slightly less than $10,000 then that also triggers the bank to privately report you to the government. All of the people mentioned in the article deposited slightly less than the $10,000 to avoid triggering, and they knowingly avoided it, although for different reasons (some did it because they thought it was a hassle for the bank, and they were trying to be nice?). So if you need to deposit $10,000+ in an account, then fucking do it! In this case, it "triggers" an event, but that event doesn't remove your money.
At least one had an entirely different reason - they were banking their cash before it reached $10,000 each time because their insurance policy had a $10,000 limit on claims for cash. Another was described as depositing wildly varying amounts at regular intervals, apparently just banking their business's weekly takings (or whatever) that just happened to always be between $5k and $10k.
Yes, there were a couple of cases where the avoidance of the limit sounded to be intentional, but that wasn't the case in all of the instances presented in the article.