You are never going to get human consensus on an unlimited block size to the point where it isn't controversial. Just isn't going to happen.
The good news is that Bitcoin is not software. It is a protocol
. Of course you have to get people to agree to use your fork but that is another thing entirely. Errr, consensus?The problem is that currently Bitcoin (the protocol) is conflated with Bitcoin Core (the software). Until this state of things changes we are de facto running a centralized system, with veto power in the hands of a few selected ones. And this is what bothers me the most.