If you read the article, its written that guy won a prize of 30$ for breaking this 12-word seed. From this prize money one can see the difficulty level of this task.
$30 is dust, which does not prove any difficulty. If you read this thread from the beginning, you will understand that it is not a difficult task to crack and arrange a scrambled 12-word seed phrase when given the actual 12 words, it is an impossible task when you don't have the words at all; so the message is just don't give out your seed phrase, it does not matter if it is in the wright or wrong order, if you give it out many people can quickly crack and arrange it correctly.
The moral of the story is to never put any of the words from your seed phrase at any risk online (whether scrambled or not= you will get hacked and lose your funds).
If you write it down on a piece of paper and have one or two backups in different and secure places, you can avoid the risk of getting hacked online and the only way you'll lose your funds if someone physically get access to those papers where you stored your seed phrase.