This is a wild projection of your own experience onto someone else's actions.

> If you really want to read a book in peace, try a library.

I've quite enjoyed the times I've taken a book to a restaurant and read over a meal. I do not appreciate you, or people like you, dictating how I ought to act in public in a way that doesn't affect anyone else in the slightest.

I don't want to start conversations when I'm alone at a table with my book. The fact that you find it somehow less social for me to be on my phone instead of reading a book when I am minding my own business at my own table seems like a tremendous failure in your own boundaries and expectations of other people.

Do you make a habit of interrupting people who are reading? If so I can just about guarantee that you're "that guy" to the people you're doing that to.