When something impossible happens, there are only two possibilities. Either your assumptions are wrong, or you have gone crazy.
It's not a matter of real or fake. These avatars are idols on the net. in other words - icons. Icons cannot solely exist through their own will. Neither Hayama nor Sugawara established their status on their own. They were able to become Talsiman and Spooky Boogie because their fans idolized them based on their own distorted perceptions. Their true feelings and colors are not the same as the ideals their characters represents. It's not surprising that a fan could do a better job than the real owners of playing the idol the fans expect to see.
Being a detective isn't about bringing someone down, but rather protecting someone. I'm sorry. I couldn't keep my promise. I wanted to go into a line of work where I could protect people. That's why I became a detective. But Makishima changed everything. That man will continue to kill people. And yet, the law can't judge him. As long as I'm a detective, I can't touch him. This case made me aware... that the law can't protect people.