FWIW Alamo is really strict against talking. I've never had an issue, and they have staff walking around enforcing (they're already walking around for orders anyway).
I'm in Austin and it's been years since I've seen anybody get warned for talking or having their phone light up.
Even if people weren't talking to each other, there's a lot of low volume conversations happening with the waiters and people use their phone to illuminate menus and to see what they are eating.
That's amazing. I would go to Alamo if there were one around me (if it were safe again) for that reason alone, let alone the food experience. I've actually been to a theater that served very nice food and drinks, Alamo-style, but the bar is so low for theater food that I'm sure even Alamo food is a treat