There are some threads about 21 like this.
TwentyOne Capital: The next MicroStrategy? You can get some additional information and discussions about it in those previous threads that can be helpful for your question.

Twenty One's business structure and strategy are more complicated than Strategy and they might succeed or fail but I am more keen on success for Twenty One. Because they copy a successful strategy of Strategy and add something new. Perhaps those new things can make Twenty One more successful than Strategy, but if not, they will still gain success.

However, I don't want to take risk with Twenty One and even with MSTR from Strategy, with me Bitcoin is my choice. I buy bitcoin and store it by myself, be self-custodial is best.