I have several concerns about them.
First- and Jenn I know you read here so this one is for you, a therapist and psychiatrist need to step in. It is obvious Jenn has some anxiety, panic, paranoia, and emotional issues that need addressing. It seems like she is desensitizing herself from reality resulting in teenage like mentality and going on constant vacations. I imagine it is not fun in her head, it is probably like living in her own personal hell. I can tell all of you that there are several people I worked with who were similar to Jenn and with the right medications and therapy are feeling much better and thriving. She can't be a good mother nor should she have another until she takes care of herself first. Do I think she is awful person? Yes, I think she is selfish and manipulative, although how much of it is bred by her insecurities is unclear.
Second, I think Tim genuinely loves Jenn and little J, at least little J. I think he loves the person Jenn used to be or pretended the be. The "hot chick" that was relatable and fun to be around. As he is approaching 40, I think it is obvious he wants to grow up and be a parent- but keep in mind, he already is. Jenn is not his partner- she's his child. I can only imagine now that he has an actual child to nurture and take care of, it is almost impossible to satisfy both. My opinion of Tim is he still wants to be a dad to Jackson- however his needs and wants are at odds with Jenn's. I can't even imagine what she says to him when the camera is off, but I'm sure it involves competing for Tim's attention with little J. This whole nanny thing was/ is a way for Tim to coddle Jenn, like I mentioned earlier, I'm 90% sure he thinks that if he gives in to Jenn's whims, she will go back to normal. Him being happy in the videos is because Jenn is "acting" like her old self again and Tim knows she won't be difficult. I know we drag Tim for enabling her behavior and making her into a monster, but I would put the majority of the blame on Jenn. Manipulating a spouse is a long-con, you have to get them in this place where you the air they breathe and slowly without the spouse knowing, their manipulative S.O starts suffocating the life from them. She got him hooked when he thought he was out of her league ten years ago and from there it snowballed. It is hard for any mistreated spouse to see their partner's true colors and when they do, it hurts like a witch. Think about how Tim is cut off from friends and family. He needs Jenn's approval to visit see any friends or family members. If for some reason Tim starts seeing the light and wants to be a good parent, he needs to give Jenn an ultimatum: Get help and be a mother to our child or he leaves her. The channel won't suffer without her. Tim solo vlogs seem to bring in decent numbers and if he downsized his life, he could bring in decent money for him and little J