I’m not a crypto guy by any means. But your point 5 doesn’t make sense. Almost all of our digital infrastructure is systems being supported by other systems.
If you want to look at debit/credit card processing that is legitimately “bad enough that it requires a separate tech to work properly”. The banking systems that existed before cards needed new systems to process those payment methods. From the outside looking in, your critique could literally be applied anywhere for anything.
Again I don’t even use Bitcoin. That’s just a bad argument.