The dude deleted his account. He co-hosts a podcast with Ken Jennings, who's now taking some hits for defending Bean Dad.
As a parent, I'd say it's fine to encouragingly say, "see if you can figure it out!", and offer some guidance. Depending on the kid and how it goes, I'd probably give it 5 minutes or so at most, more if they want it and are determined.
6 hours? That's nuts at any age, let alone 9 years old. That's the length of a whole school day! Whatever she learned from the ordeal is going to be pretty negative, and way more about her father than about herself.
