Actually now that I'm back, I was thinking there's also another plus to actually being at a restaurant and that's being around actual people, which is kind of nice.
And I'm going to make a version of that theoretical app from my last post. Like I'm going to start a meetup group called Food Friends which has a meetup once a week where you show up and meet strangers who like to eat. Then you can join into a LINE group chat for the group and anytime anyone in the group wants to eat somewhere and is looking for an eating buddy they can post in the group chat "Hey, anyone wanna join for X tonight at Y"? and everyone part of the chat will get the message and can reply if they want to join. The purpose of the weekly in person meetup is just so after you join the chat, you know who these people are posting in the group chat and if there's someone that weirds you out or you don't like, then just don't join if they're asking.
The goal of it is to make a safe, private, non-dating way for people to have a large group of friends in the area that they can hit up for eating and see if anyone is down. Sorta like how high school friends used to be.