Problems about update of protocol of bitcoin
The general approach to Bitcoin protocol updates is to maintain forward and backward compatibility with the prior consensus rule set on the network.
In fact, Bitcoin's protocol stability is considered one of its most important properties, as it ensures that people can confidently store value and rest assured that their funds will remain accessible in the future. Changes to the system that would pull the rug under prior investors would meet extreme resistance.
Obviously, every user has to decide for themselves whether the perceived social contract is stable enough to inspire confidence.