Sometimes users wonder who controls the bitcoin core? I will tell you that many can change the core of Bitcoin because the software is open source. Of course, not all changes will be accepted. When a decision is made about changes, they are actively discussed by the community. It is the members of the community who decide to accept or reject the change. I learned about this from the article "what is bitcoin core" https://minery.io/blog/what-is-bitcoin-core/ . For me, this topic is new, so I'm actively studying it now.