I like that this man and his family lived by example. They showed all the things they had changed - their diet, their modes of transportation, their home set-up, and yet how they were still a pretty normal family it's not like they were living in a dirt hut or on a commune (not that there's anything wrong with those two things, but average Western people mostly aren't willing to change that much or give up modern life completely). The family still has computers and they go to restaurants and live in a metropolitan area. I also think it's important that they showed an affordable working or middle class way to live a sustainable lifestyle, and pointed out how eating whole foods, having a vegetable garden, raising chickens for eggs, and even saving perfectly good food that a grocery store was about to throw away saved them money, not cost them more. They even contrasted their low-key "normal family" lifestyle to one of the big impressive technologically advanced sustainable homes of a wealthy celebrity, showing the range of possibilities in living a more sustainable life.
I know some people are complaining because it wasn't a teaching video of step-by-step carbon footprint reduction, and yet it was. Changing your diet by eliminating meat (or eating a lot less), eating local whole foods, growing vegetables, composting, etc. are things that many or even most people can do. Vegetarianism is cheaper than a meat-heavy diet and eating whole foods is cheaper than processed packaged instant foods. Learning to compost or have a small garden are affordable life skills. Also, the fact that the scientist rode his bike, and he and his wife powered their car with cooking oil are do-able. Diesel cars are usually old and cheap, and this would be a great project to learn for someone who likes to drive but can't afford an electric car. None of these things were extravagant, and only the gardening and fixing up a diesel car are interesting ideas that would take more time and effort. Just changing your diet and transportation alone has an enormous impact. So does buying less stuff, or getting things used.
I feel that the meditation bit was important. Meditation isn't a "religion" it is a form of healthy coping that can be done by atheists and theists alike. Climate disorders like despair, anxiety and PTSD are very real, and meditation is an effective way to support your mental health, and it's actually key for activists who need to practice self-care to be able to continue to go out and make change in the world.