How does a trader turn into a sheikh and issue fatwas on his own topics?

Lecture on the permissibility of trading in digital currency futures contracts

In the name of God, the most gracious, the most merciful

the introduction:
Praise be to God, Lord of the Worlds, and prayers and peace be upon the most honorable of prophets and messengers, our master Muhammad, and upon all his family and companions.
My dear brothers and sisters, may the peace, mercy, and blessings of God be upon you.
I am pleased to meet you today to talk about a thorny and interesting topic, which is “the permissibility of trading in cryptocurrency futures contracts.”