Alex's final words before killing the Danite, about not owing the world or it an explanation sparked an outrage. Many were enraged and called him a hypocrite for withholding information that may help the world succeed. Meanwhile, others just believed that he has shown he is on the side of humanity so there is nothing more needed.
By this time he had already gotten fanatic followers who simply chant invincible at the thought of him. The only human with abilities that call himself supreme deity! He is in the same S ratings with master Ye but their strength is worlds apart!
He instantly became an extremely popular figure. He and Danny left with what was left of the Danite's body, as for master Ye, he was completely healed by Danny but he still remained unconscious. He had expended too much energy and needed time to recover.
