OK so I actually watched the video, as I do agree with your sentiment.
First impressions was that she seemed like an interesting person, I liked her outlook on life ect. Bonus points for still being a healthy shape in her 50's not that it is relevant to this.
Then, of course, cynical Joe kicked in and I'd like to know who's paying for all this - is she doing this on top of working? Or is she on the tax credit train, or did she take some poor bloke to the cleaners in a divorce? Even if none of the above, she still got to buy a house far cheaper than this generation which offers freedom.
Even with all that though, having an attitude of being a life long learner is one I admire.
If I were to be my best self, it would be to aim not for the highest paying job I could find in my own profession, with the stress and loss of time that comes with it, but to know about lots of different things, yes my profession but also being able to cook and know about nutrition and a bit about exercise, and when I get a house enough about DIY to maintain that, also more about music and writing and various other things. As pretentous as the term sounds I've always like the idea of the 'renassance man'.
I see two extremes in my own life regarding this way of thinking.
I never get bored if I have time to myself (and not just because I'm shitposting here so much), but I've heard the opinion from my brother and one of my best friends that they're glad they work so much because they wouldn't have a clue what else to do otherwise. That they don't actually like having free time. And when my mate spent the last few years or so moving jobs to the point where he's earning about 60-70% more than he did 4 years ago, instead of thinking about banking that extra money to retire early he's buying a big house that will make sure he'll be working that hard probably till he dies, and all he talks about these days is work. My Dad has been retired for a decade and still drinks far too much in part because he doesn't know what do do with his time. He has more money and a bigger house than he knows what to do with, but in 10 years hasn't had the get up and go to pick up a single hobby e.g. he's an expert joiner by trade and knows a ton about cars so could restore some old cars....but instead he just drinks a bottle of wine every night after dinner and falls asleep all evening.
On the other side of the spectrum I have a friend who bought a cheap council house several years back and works 3 days a week. He has so many hobbies and interests that there's not enough time for them even with his short working week. He's never bored and always busy. He knows enough to maintain his own house, buys cheap run down veichles/motorbikes/caravans second hand (for personal / family use, not to sell on....) and spends hours doing them up himself, knows about electronics ect... a while back he casually mentioned that they thought the kitchen needed a facelit....for most of my friends that would be their wives telling them to go and spend 4 figures on a new kitchen. This bloke and his wife re-did the whole kitchen themselves, with him doing tiling and his wife re-painting all the cabinets herself. If most of my mates suggested to their wives they do some DIY they'd not talk to them for a week In addition to learning about these kinda things and being self-sufficient, this bloke's wife has also tried sevel different careers in the last decade, since they have a cheap mortgage she's been able to move on from one kind of job into training for another when she wasn't happy with what she was doing any more. I think overall his outlook on life is closer to how I'd like mine to be.
But as per usual, the personal freedom required to achieve this is based on affording shelter.