Not to defend Jill, but YT disabled comments on all videos/vlogs that feature minors. It wasn't Jill turning them off.
I think their house is ok for what they could afford, as a starter home. And I'm no great housekeeper either. My house isn't really dirty, just a bit cluttered. But you can be sure that if I was doing a video house tour, I would have straightened it up before hand, or kept certain areas out of the video, like the laundry room. Just say what's behind the door. We can all imagine what a laundry room looks like.
I agree with others, if they boys are gonna share, give them a bigger room, with room to play. Or make the "guest room" Sam or Izzy's room and put the blow up mattress out only when a guest is staying over. With proper bedding.
Izzy could nap in his own bed if he had his own room. He should be ready for a bigger bed by now surely!