Same here, just watched out of curiosity.
I think she is a hard worker and ambitious BUT I think she was very much right time / right place and has been incredibly lucky. I don't think she offers anything special or unique, she just got into Instagram at the right time.
And that is the case with a lot of people these days, and I guess always has been. The world moves so fast these days with tech etc and somebody who gets in there first often does well.
If it wasn't her it would be somebody else.
And fair play to her.
I do find all the hype around her strange though. I don't see much of it because I'm in my 40s and not really her target market, so she's not particular on my radar. I do remember a bit of noise about their breakup, but I found it strange to see all the social media clips (on the documentary) from young girls, posting videos of them reacting to the news and saying how shocked they are and omg poor Molly at home with a baby etc etc. They were just speaking like they were so invested and like they knew her personally. Just so alien to me.
I also found it sad how both her parents said they wished she was still just working in Boots and living a normal life. She does seem very stressed by it all, and that must be hard for them to see. But by the same token, she is so wealthy. If she's so stressed by it all, just stop. Invest her wealth wisely and she'll never need to work again, just life her life out of the public eye.