You’re on the internet. Most Deaf people these days read English fluently. It’s just that Deaf 70 year olds were often able to get away without becoming actively fluent in English and may not have felt the need to. Closed captions are younger than most people think and they fucking sucked fairly recently. I grew up watching the news with captions and it was distracting if you didn’t need it. Big black boxes with the words said a few seconds ago rapidly appearing on them as they covered stuff. And often captions on prerecorded content wasn’t much better. It was an accessibility feature and treated as such. Technology connections has a great video on closed captions that was almost nostalgic lol.

Then there’s also the mood. If you grew up with tv that had captions you’re used to it. But before captions we had terps (interpreters). At live events we have them. At a government press release they already needed one because they can’t just show the teleprompter to the Deaf people in the audience. So they just show the terp where we expect to see them on the screen. Like I can’t think of an event on tv that has interpreters that doesn’t need one in person.