and here is the problem, you have read the whitepaper several times, but that is just the fundament. its like you look at the walls of a house and say that this is not enough to fulfill the requirements of a real building....ofc it is not your are missing every other details.
and we are talking about MONEY. not about blockchains in general. when it comes to technical basics ofc there are other blockhains which can fulfill different purposes better than bitcoin blockchain will ever be able to....but NOT when its about money. and furthermore blockchain is just one specific kind of DLT. I can read in your words that you need to study several thousands of hours more, but trust me the result is worth it :)