If you are investing majority of your wealth in anything risky enough to depreciate, this model of wealth management is not suited for that? That doesn't mean no risks should be taken, this step comes after that. Lets say you found a unicorn startup, you would do just before being bought out.

These products are niche for a reason, there are only few with the kind of generational wealth to structure their assets in this way.

The author puts it at 300M+ net worth, I cannot attest to that, but I expect it the costs associated and starting conditions needed of how much of your portfolio is in extremely low risk assets to make this worth while, so only sensible for the ultra rich.