Reddit has about 500 million users. That's about 7500 million non-users, or 850 million English-speaking non-users. (Assuming all reddit users are english-speaking? Don't know if the site supports other languages.) Just looking at those numbers, I'm confident there's plenty of other people like me who looked at the site once or twice, found it unpleasant to use and with a low level of discourse, and never bothered actively going back; and these days stumbling upon it in web search is indeed actively unpleasant because of performance and UI issues.

"I don't like talking to people online" is pretty easy to type.