Image has been posted many times since 2018
Social media users have shared this photo in an attempt to make fun of various groups over the past several years.
In July 2018, a Reddit user posted the image to make fun of the staff at Twitch. This 2020 Imgur post describes the restaurant-goers as various video game characters.
A reverse image search for the image traced its earliest online appearance to a July 9, 2018, Imgur post. According to the post, the Facebook page Flat Earth Believers posted the same photo. Flat Earth Believers described the image as a monthly “flat earth meet up.” The image has since been removed.