Once matter crosses the Event Horizon, you are correct.
However, matter that is near the Event Horizon is squished and elongated (spaghettified) and in friction with literally billions of tons of other matter heating it up to extremely high temps as it circles the drain, it gives of radiation in the form of radio waves, X-Rays, and microwaves and magnetic fields that are twisted and knotted in unimaginable forms..................
Oh so this is outside the event Horizon. Wow. Imagine that is just out there. Weird universe stuff.