Yes a lot wealth on the world is rotten.
Banks could go bust properties assets could be destroyed and much more + russian west economic sanctions and taking assets + money of each others.
You hold your wealth in crypto you manage to save your wealth If not then your years of hard work could go just waste so people who don't have crypto will be in serious trouble get cryptocurrency and debit card to spend your crypto instantly.
People learn hard way that crypto is safe heaven.
Your advice does sound good in terms of storing assets, but everything must be adjusted to our individual needs so that everyone does not have to put all their money into crypto when basically everyone also needs a place to live and a personal vehicle to run their own business. Because if we think about destruction, this earth can also be destroyed and the internet that already exists in this world can also be destroyed when a major disaster comes suddenly. So we all have to have an adjustment in thinking so that we can put something correctly in any case, I also like to store assets in crypto, but that doesn't mean I have to empty my pockets of the paper money I need every day to buy food and drinks.