It’s ok to not know something. You don’t have to share an opinion that has no basis.
If you’ve ever done multi-day outside activities in the cold, you learn really quick to not wear cotton socks or under layers. Your sweat is what makes you cold because cotton will no longer provide a warm layer. Wool still has air pockets and will keep you warmer and may save your life or limbs.
Are you going to be comfortable in wet wool? No, but you have a better chance of surviving and not getting frostbite.
The art style is nice but the content makes no sense. Kanban and scrum are parts of agile. They are not their own systems.
Lean also doesn’t mean you have no money. It’s a system of manufacturing where you cross train people to do the jobs on either side of them so they can pick up slack if needed and keep things moving without hiring more people.