From a randon article:

Williams said that while in custody, Said admitted to researching how to conduct an attack on local military recruiting centers, offering his home as sanctuary for ISIS operatives, bragging that he would commit a “9/11-style” attack if he had the resources and attempting to produce ISIS propaganda.

“We stopped a potential terrorist attack from happening right here in Houston! Any day we can publicly say that is a good day,” FBI Houston said.

Said is being held in custody but appeared in court for a preliminary hearing on Tuesday, his attorney, Balemar Zuniga, told Fox News Digital.

“The indictment only alleges that he supported a terrorist group through the production of videos and propaganda,” he said, noting that federal prosecutors mentioned the plotting of terror acts but have not charged him with such. “None of that is alleged.”

So no, he is being charged with conspiracy to commit a crime with a recorded confession, but it is possible the confession was coerced (but unlikely because he was actually producing content online on ISIS’s behalf.