It's because _act_ is right. Bitcoin is decentralized and the developer of it Satoshi Nakamoto, no one knows where he is and that's just a pseudonym.
While the majority of the altcoins and also the stablecoins are issued by known people, registered people where the government can come and sue them anytime they want to. Bitcoin's nature, network, and security is maintained by its people and not just by some developers that do a thing on their developed altcoins.