I can't agree with your:

Bitcoin pretend to be the money. Bitcoin is not in any test environment, but fully interacts with all other kind of money around. And of course, there is lesser quality money and higher quality money around. And Bitcoin in such real, living and interacting environment - is better and better money with every halving.

You have focused only on (non-general) third statement, which is - even without Gresham's law fragment - still valid. First and second are still valid, too.

There is no "central banker" in my proposal - or: do you really want to name free market as central banker?

P.S. just btw, demurrage in my opinion may work only after hiperbitcoinization: #85100