You’re missing the point. The core devs were responsible for their implementation. A BDFL can delay changes indefinitely and add or remove controversial features. Satoshi did with some features that were re-added to BCH. According to Vitalik, ETH might never have existed if some of the changes Satoshi reverted were kept in. BTC was never set up as a reference platform and probably couldn’t have been without destroying via fragmentation hell. But even if it was, they would not need to fork off the reference since they are The Reference. You might not like the decision of the core team. Many Linux developers did not like that C++ was banned from the Linux kernel because it is not pure, only to have Rust be accepted despite being fundamentally a bigger difference to C than C++, but that’s the BDFL’s decision to make. If you don’t like it, you make a fork which is what BCH ultimately did and what many Linux forks continue to do. With 20/20 hindsight, BCH should have just maintained a separate fork (made in the most backwards compatible way so all BTC features were BCH features) and created a parallel Reddit Forum (perhaps call it something like Bitcoin Complete), but that would require a new BDFL which you might not end up agreeing with on other points. If such a fork was done early enough, Bitcoin Core and Bitcoin Complete might have been forced to co-operate or come to an arrangement like “no new feature goes into Bitcoin Core unless it first goes into Bitcoin Complete and people are free to use either coin”.
Perhaps, but there are at least 5 factions mentioned even in Roger Ver’s account. Project management is hard, especially for a research project (i.e. trying to build something that’s never been built before) and people dig in for the dumbest reasons. Usually, developers can hash out a compromise solution but when non-developers try to “help” like the Reddit moderator or the companies putting out the ad to pressure the core team to change, things can get very messy and factions solidify to the point where nothing moves forward. IMO, if developers were to just sit down together to resolve this, a new structure would have formed. Bitcoin Next Generation would contain all the advanced experimental changes such as those that eventually got into Etherium. Bitcoin Preview would contain all Bitcoin Next Generation which have a solid chance of being accepted into Bitcoin Core but need proving time. Finally Bitcoin Core would be the most conservative Bitcoin branch which would only contain changes from Bitcoin Preview. Yes, they would be 3 different coins but they would work towards being mutually compatible and would be able to satisfy all parties. If you want to see how well this would work, look at Debian which has the “Unstable, Testing, and Stable” branches. All three branches are in use. Note, “stable” is ossified (like Bitcoin Core). It’s old but it was proven.