Deaf New York residents sue Cuomo for not using a sign language interpreter

I have been seeing all the ASL interpreters during government press conferences and have been very confused about their usefulness. These feeds are all on TV news channels with closed captioning. Do deaf people prefer an ASL interpreter on a small corner of a TV over written text?

The article mentions a deaf man who did not know about the stay-at-home order until a relative called him. Even if true, are we suppose to assume he had been watching the news broadcast of the Cuomo presser and only didn't pick up on it because there was no interpreter?

I would love for someone with more knowledge to chime in and tell me why I'm misinformed. I'm more curious than anything else.