there is no such thing as "the Satoshi Bitcoin brand". in fact one of the reasons why Satoshi went away was exactly to prevent this kind of idiotic concepts in a decentralized system.

there is only Bitcoin protocol and this protocol needs to evolve and change over time. whether it is bug fixes, improvements or major changes. they are all equally needed for bitcoin to move with the technology.
not to mention that the initial protocol Satoshi created had flaws that were fixed through all the very same changes you say should not be allowed.