Who defended bitcoin?

Who were the key proponents and advocates that stood in defense of Bitcoin during its early stages of controversy and scrutiny? Did they hail from the financial sector, the tech community, or perhaps a mix of both? What arguments did they put forth to justify the legitimacy and potential of this emerging digital currency? Were their defenses rooted in economic theory, technological prowess, or a vision for a decentralized future? Did they face significant opposition, and if so, how did they navigate through the challenges to uphold their beliefs in Bitcoin?